MOTRIO BLOG
The MOT test is a legally required inspection in the UK, aimed at keeping vehicles safe and reducing accidents caused by defects. This MOT checklist explains what is checked during the test, what you can check yourself before booking, and what happens if your car fails. It is not the same as a service, which looks at the general mechanical condition of the car.
What is an MOT test
If you buy a new car, the first MOT is due by its third year of registration and then every year after that. You can have the test done up to one month before your current certificate expires. If the car passes you receive an MOT certificate, and if it fails you get a list of defects to fix. Driving without a valid MOT is an offence and can mean a fine of up to £1,000.
What is checked during an MOT (the MOT checklist)
An MOT covers more than 100 checks across several categories. The main areas inspected are:
• Lights and signalling: headlights, sidelights, brake lights, indicators and fog lights. This is the single most common reason for failure.
• Tyres and wheels: condition, size and a tread depth of at least 1.6 mm.
• Brakes: condition, operation and overall braking performance.
• Steering and suspension: wear, play and correct operation.
• Visibility: windscreen condition, wipers, washers and mirrors.
• Seat belts, airbags and the horn.
• Exhaust and emissions, plus the body, structure and registration plate.
Pre MOT checklist: what you can check yourself
A few simple checks at home can boost your chances of passing first time:
• Walk around the car with all lights on and replace any blown bulbs.
• Check tyre tread (1.6 mm minimum) and pressures, and look for cuts or bulges.
• Top up the washer fluid and replace worn wiper blades.
• Make sure the number plate is clean and legible and the horn works.
• Check that no dashboard warning lights stay on, as some can cause a failure.
What happens if your car fails
Since 2018, defects are graded as minor, major or dangerous. A car with only minor defects still passes, while major or dangerous defects mean a fail. You normally have the car retested after repairs, and you must not drive a vehicle with a dangerous defect or an expired MOT on a public road.
Get ahead of the test: book an MOT at your nearest Motrio centre, DVSA approved and ready to help you pass. Motrio Car Repair Shops: professional service for all vehicle brands
Has a warning light lit up on the dashboard of your car, and you have no idea what it means? Don't panic. Here is a handy and comprehensive guide to recognising car warning lights and icons. They follow the same logic as traffic lights: the colour tells you how urgent the issue is. Below you will find what each colour means, the most common warning lights and what to do when one appears.
Car warning lights by colour
The warning lights on your dashboard are visual indicators that vary in colour according to how serious the reported status is.
• Red reports an imminent danger and tells you to stop the vehicle as soon as it is safe to do so.
• Amber or yellow (the most common yellow car warning lights) flag an issue that needs checking soon, though it is usually less urgent than a red one.
• Green and blue simply indicate that a system, such as the headlights or indicators, is on and working. They are not a fault.
Red warning lights (most urgent)
Red car warning lights are the ones drivers dread, often joined by an acoustic signal. Stop safely and seek assistance. The most important red lights are:
• STOP light, coolant temperature, oil pressure, brake system and battery charge.
• Airbag (SRS) light, which signals a fault in the airbag or seat-belt restraint system.
Amber and yellow warning lights
Amber or yellow car warning lights mean caution: the car may still be drivable, but the issue should be investigated as soon as possible. The most common are:
• Engine management light (EML or check engine), which can range from a minor sensor fault to a serious engine or emissions problem.
• ABS, tyre pressure (TPMS), traction control, diesel particulate filter (DPF) and low fuel.
Green and blue warning lights
When a green light comes on, there is no need to panic: this colour indicates that something is on and working as intended, such as the dipped headlights or the turn indicators. Blue lights are less common and generally show that the full beam headlights are on.
What to do when a warning light comes on
Use the colour as your first guide: stop straight away for a red light, and book a check soon for an amber one. Always cross-check the symbol with your vehicle handbook, as the exact icon can vary by make and model. If a light stays on, the safest step is an electronic diagnosis to read the fault codes and pinpoint the cause. Remember that some lights, such as the engine management light, can also cause an MOT failure.Not sure what a light means? The Motrio experts can run a full diagnostic and fix the cause. Motrio Car Repair Shops: professional service for all vehicle brands
You get into the car in the morning and the TPMS warning lights up on the dashboard. Or, after a long motorway run, the car feels a little less precise, as if it's "floating" in the corners. Tyre pressure is one of those things that affects your driving every single day, even when you don't notice it. A few tenths of a bar off is enough to hurt grip and push fuel consumption up. Let's look at why it matters, what the right values are and how to check it in just a few minutes.
Why is tyre pressure so important for safety and fuel efficiency?
Tyre pressure affects three things directly: road grip, fuel consumption and tyre life. An under-inflated tyre sits on a wider patch of road than it should, heats up faster and wears unevenly on the shoulders. Over-inflated, it only contacts the road in the middle of the tread, reduces the effective contact area and loses braking stability.
Fuel consumption follows the same pattern. Even 5 PSI below the recommended value (about 0.3 bar) can increase fuel use by 3 to 5%. Over a year of average driving, that's a meaningful amount of money spent for no reason.
Safety is the big one. A pressure that's too low increases stopping distance, particularly on wet roads, and makes the car more vulnerable to aquaplaning. A pressure that's too high reduces comfort and, in a pothole impact, exposes both the wheel and the tyre to damage. A regular tyre pressure check is one of the cheapest forms of preventive maintenance you can do.
The TPMS system (tyre pressure monitoring), mandatory on all new cars sold in the UK since 2014, is an ally, not a nuisance. If the warning light comes on, actually check the pressure — don't just reset the warning. A persistent TPMS warning sometimes points to a slow puncture that needs attention before it becomes a flat tyre. It’s also worth noting that a TPMS warning light on during an MOT test will result in an automatic fail, as it indicates the tyres are not correctly inflated.
How to check your tyre pressure and what values should you use?
How to check tyre pressure is straightforward, but the timing matters. The check should always be done cold — that is, after the car has been parked for at least two or three hours, or driven less than 2 miles at low speed. Measuring hot, after a motorway run, gives a reading that's 3 to 4 PSI (around 0.2-0.3 bar) higher than the real value: you risk deflating tyres that are actually correct.
What tyre pressure should my car be? The correct values are always in three places: the owner's handbook, a sticker on the driver's door pillar, and sometimes inside the fuel filler cap. The values depend on the model and the load, but for most UK hatchbacks and saloons they sit between 30 and 35 PSI (around 2.1-2.4 bar). SUVs and larger cars usually need between 33 and 38 PSI (around 2.3-2.6 bar). A car loaded with five passengers and luggage needs 2-4 PSI more than the standard value. Check my tyre pressure by reg services online can also give you the recommended values quickly.
To measure, you'll want a tyre pressure gauge: digital ones for home use cost between £15 and £40 and are very accurate. The free air machines at petrol stations work too, though the calibration can drift. Either way, check your tyre pressure at least once a month and always before a long trip. Don't forget the spare wheel, if your car still has one.
Free tyre pressure check at a Motrio garage
Motrio garages offer tyre pressure and condition checks as part of routine service, with a full inspection of tread depth (the UK legal minimum is 1.6 mm), uneven wear and wheel balancing. It's a quick visit that can make the difference between a confident drive and an unwelcome surprise.
Motrio is a network of independent garages backed by the Renault Group, with workshops across the UK and technicians trained to handle all tyre brands, from city cars to SUVs. If the TPMS light has come on or you haven't checked the pressure in a while, find your nearest Motrio garage and book a check: a few minutes is all it takes.
You pop the bonnet for a quick check and notice the coolant reservoir is almost empty. Or you spot a small coloured puddle under the car after a long stop. Car coolant is one of those fluids most drivers never think about, until something stops working as it should. And yet it's one of the most important protections for the engine. Let's look at what it does, how often it should be changed, and how to choose the right one for your car.
What does car coolant do and how do you check the level?
Coolant for car is a technical fluid that flows through the cooling circuit of the engine. It has three main jobs: absorb the heat produced by combustion, protect metal parts against corrosion, and stop the fluid from freezing in winter thanks to its antifreeze component. People often call it just antifreeze, but in reality it's a year-round mix that works in both summer and winter.
Colour isn't a style choice. Coolants come in green, red, blue, pink or orange, and each colour points to a specific chemical formulation (IAT, OAT, HOAT and so on). Working out what coolant for my car is right means checking the handbook: mixing two incompatible types can cause deposits, lose the anti-corrosion properties and damage the water pump. The rule is simple — use the type specified by the manufacturer, and don't top up with whatever happens to be on the shelf.
To check the level, look at the reservoir when the engine is cold — that is, after the car has been parked for at least a couple of hours. The tank is translucent and marked with MIN and MAX lines. If the coolant sits below the MIN line, or if you keep needing to top it up, it's time for a workshop check: a steady drop almost always points to a leak somewhere in the circuit.
Which coolant does my car need and when should it be changed?
What coolant does my car need is answered, first and foremost, by the owner's handbook. The manufacturer lists the exact specification (G11, G12, G12+, G13 and equivalents) and most modern UK cars use a long-life OAT or HOAT coolant. Most manufacturers recommend a full change every 4 to 5 years or every 60,000 miles, whichever comes first. Some long-life formulations can last up to 100,000 miles, but the time limit still applies: the anti-corrosion additives degrade with age, even if the car is rarely driven.
Between full changes, a top-up is sometimes all you need.Even if the loss seems small and occasional, it’s always worth having it checked at a workshop: even a minor leak from the water pump, the radiator or a hose can worsen over time and should not be ignored. A coolant check is often included as part of a routine car service, along with the brake fluid and oil.
On price: a 1-litre bottle of engine coolant for my car costs between £8 and £20 depending on the quality and specification. A full change at a workshop, including system flush and labour, typically runs between £50 and £100 for a standard car. The job usually takes 30 to 60 minutes.
A signal you should never ignore is the engine temperature. If the needle climbs towards the red zone or the temperature warning light comes on, pull over safely and stop driving. Continuing with an overheating engine can damage the cylinder head and gasket, repairs that cost far more than a preventive check.
Car coolant check and top-up at a Motrio garage
Motrio garages carry out coolant level checks and full changes as part of routine servicing, using products that match your manufacturer's specifications. Before any change, the technicians check the circuit for leaks, so any small problem is spotted early.
Motrio is a network of independent garages backed by the Renault Group, with workshops across the UK, fast turnaround and transparent pricing. If it's been more than four years since your last coolant change, or you've noticed the level dropping, find your nearest Motrio garage and book a check.
A sudden shower hits and you switch the wipers on, but instead of clearing the screen they leave streaks, screech or skip across the drops. It's the kind of moment that always happens at the worst time, in the dark or on the motorway. Windscreen wiper blades are a small, almost invisible component, but when they stop working properly your visibility drops sharply. Let's look at how to spot the signs, how to choose the right ones and what the replacement costs.
How do you know when your windscreen wiper blades need replacing?
When to replace your wiper blades has a straightforward answer: before you realise they've stopped doing their job. On average, blades should be replaced every 12 months, whatever the mileage. The rubber edge is exposed to sun, frost, dust and temperature swings, and it deteriorates even if the car spends most of its time on the drive. After a year, even blades that look fine often perform poorly.
The signs to watch for are concrete. The first is streaks or smears on the windscreen after the blade has passed: the rubber edge no longer makes uniform contact. The second is squeaking or juddering during the wipe, a sign the rubber has hardened or cracked. The third, more obvious, is patches of glass that stay dirty or hazy even after several wipes. If your windscreen wipers not working at all, the fault may be in the motor or linkage rather than the blades, and that needs a workshop check.
Visible cracks along the rubber edge, or small pieces falling off, are also signs you shouldn't ignore. Replacing wiper blades is one of the cheapest pieces of maintenance you can do, and it prevents a serious safety issue: in heavy rain, a worn blade can cut your visibility down to just a few metres.
The front wipers always wear faster than the rear one because they do more work. If your car has a rear windscreen wiper, it's still worth checking its condition once a year — drivers often forget it until it fails.
How to choose the right windscreen wiper blades and how much does it cost?
There are three main types of wiper blade: traditional (with a metal frame), flat blade (low-profile, now standard on most recent cars) and hybrid (combining the two technologies). The choice depends on your car's model and year: modern vehicles almost always use flat blade designs, while older cars may accept the traditional type. The best windscreen wiper blades are the ones specified for your model, not the most expensive ones on the shelf.
The most important factor is size, measured in inches or millimetres. The driver's side and passenger's side blades often have different lengths (for example 24 inches + 18 inches), and the rear blade is usually shorter. You can find the exact figures in the owner's handbook, or look them up online by registration number.
On price: a pair of quality front blades costs between £20 and £45. Premium versions or specific high-end models can reach between £45 and £70. A single rear windscreen wiper costs between £10 and £20. The fitting itself is fast — around 5 to 10 minutes — and at a workshop, labour is usually included free of charge or built into another service job. How to change windscreen wipers is something many drivers can do themselves, but a professional fit guarantees the right tension and a proper seal.
An extra point worth knowing: in winter, choosing blades designed for low temperatures (with anti-frost treated rubber) extends their life and maintains good cleaning quality even below 0 °C.
Windscreen wiper blade replacement at a Motrio garage
Motrio garages offer windscreen wiper blade replacement with blades that match your model, professional fitting and a function check afterwards. It's a quick visit, often done at the same time as another service or seasonal check.
Motrio is a network of independent garages backed by the Renault Group, with technicians who can advise the right blade type for your car and how you use it (urban, motorway, rural roads). If you've noticed streaks on the windscreen or hear a squeak with every pass, find your nearest Motrio garage and book a replacement: clear vision returns in minutes.
You glance at your service booklet and realise it's been more than a year since the last visit, or the miles have piled up without you really noticing. Maybe the service light has come on, or the engine just feels a little less smooth than it used to. Booking a car service is one of those jobs that's easy to put off, but it's also one of the most important if you want your car to keep running well between MOTs. Let's look at how often you should service it, what a full service actually covers, and how much it costs in the UK today.
How often should you service your car and what does a service include?
A car service is the routine maintenance the manufacturer recommends to keep your car running properly. It's not the same thing as an MOT: the MOT is a legal safety inspection, while a service is preventive maintenance that protects the engine, brakes, suspension and fluids.
How often should you service a car? The general rule is every 10,000 to 12,000 miles or once a year, whichever comes first. Some modern cars with long-life oil schedules can stretch to 15,000 to 18,000 miles, but the 12-month limit still applies: oil and other fluids age even if you drive very little. If you do mostly short urban journeys and lots of cold starts, stick closer to 10,000 miles rather than waiting until the upper limit.
What is included in a car service depends on whether it's an interim service or a full car service. An interim service usually covers oil and oil filter, top-up of all fluids, a brake inspection, lights, tyres and a basic safety check. A full car service goes further: it adds air filter, cabin filter, spark plugs on petrol cars (when due), brake fluid check, and a more thorough inspection of suspension, exhaust and steering. Major services every 36,000 miles or so may also include the timing belt where the manufacturer specifies it.
Skipping a service means small wear issues can develop without anyone catching them. Caught early, most of them cost very little to put right. Left to develop, the same issues can turn into expensive repairs, particularly on modern engines with direct injection or hybrid systems.
How much does a car service cost in the UK?
How much does a car service cost in the UK depends on the type of service (interim, full or major), the engine and the car you drive. Here are the typical ranges across UK independent garages.
An interim service on a standard petrol hatchback usually costs between £120 and £180. A full car service on the same car runs between £180 and £280. On a diesel saloon, SUV or premium model, a full service can reach between £280 and £450, especially when long-life oil or extra filters are involved. What is the average cost of a full car service UK? Most owners pay around £200 to £250 at a quality independent garage.
Labour usually accounts for £60 to £120 of the bill, with the work taking 1 to 3 hours depending on the level of service. It's always worth getting a written quote before the work starts: a good garage will list the exact parts they're fitting and the price of each line.
A few things to bear in mind. Skipping the service to save money rarely pays off: small problems caught at service time, like a worn brake pad or a leaking shock, are far cheaper to fix early than later. A regular service history also helps maintain the resale value of the car. If you have an MOT coming up, it's often worth booking the service shortly before it: many MOT issues can be picked up and fixed during the service.
Book your car service at a Motrio garage
MOTRIO is a network of independent garages backed by the Renault Group, with technicians trained to work on all makes and models. A car service at a Motrio garage follows your manufacturer's specifications and always comes with a transparent quote before the work starts.
You get a full diagnosis before any work begins, quality parts equivalent to original equipment, and competitive pricing thanks to the strength of the network. If it's been more than a year since your last service or you're approaching 10,000 miles, find your nearest Motrio garage and request a quote for your service.
You're driving straight on the motorway and you notice your steering wheel is sitting slightly off-centre, or the car drifts to one side the moment you ease your grip. Maybe you've fitted new tyres and, a few thousand miles later, you're seeing odd wear patterns on the edges of the tread. In all three cases the likely culprit is the same. Your wheel alignment is out.
What is wheel alignment and why does it matter?
Wheel alignment is the set of angles that determines how your wheels sit in relation to the road and to the body of the car. There are three main angles (toe, camber and caster) and together they dictate how the car tracks, how the tyres wear and how precise the steering feels.
When alignment is within manufacturer tolerance the car behaves exactly as designed. It holds a straight line, the tyres wear evenly, the steering is crisp. When alignment slips out of spec, even by a few millimetres, the effects pile up quickly.
Common wheel alignment symptoms include a car pulling to one side when you lightly hold the steering wheel, a steering wheel sitting crooked in a straight line, uneven tyre wear with the inside or outside shoulder more worn than the centre, vague steering feel in corners, slightly higher fuel consumption. The causes are almost always mechanical. Kerb strikes, deep potholes, speed bumps taken too fast. Normal wear of suspension components can also shift the angles over time, just like the common car suspension problems you can prevent with regular checks.
It's worth clearing up a frequent confusion. Wheel balancing vs alignment are not the same thing. Balancing corrects the distribution of weight around a wheel and tyre assembly, which prevents vibrations at high speed. Alignment, on the other hand, adjusts the geometry of suspension and steering. Two different jobs.
Signs your car needs a wheel alignment
A wheel alignment check isn't tied to a fixed service interval. It should be carried out in specific situations. After fitting new tyres, so the fresh rubber starts with clean wear. After a hard impact against a kerb or a deep pothole. When you notice any of the symptoms above. Whenever suspension or steering parts have been replaced. As a general habit, once a year or every 10.000 to 12.000 miles for vehicles used heavily, and definitely when you switch to winter rubber following the winter tyres guide.
In the garage, alignment is measured on an electronic alignment rig that reads all three angles and compares them with the manufacturer's specification. The technician then adjusts the track rods, and where possible camber and caster, to bring the values back within tolerance.
The job usually takes around an hour, longer if other parts need inspection or replacement first. A search for wheel alignment near me will return plenty of options, but the quality of the result depends on two things. The state of your suspension and steering components, and the rig and expertise of the garage.
If track rod ends or bushings are worn, alignment simply won't hold. A good technician will flag this before starting the job. For an accurate wheel alignment cost, the best approach is to ask for a quote after a quick visual inspection, so the estimate reflects the real starting condition of your car.
Wheel alignment checks and adjustments at Motrio
Motrio garages carry out wheel alignment checks and adjustments on an electronic rig, with a preliminary inspection of suspension and steering components so the new settings will actually hold. This avoids the frustration of aligning a car that'll drift out of spec within weeks.
MOTRIO is the network of independent garages from the Renault Group, with technicians trained to manufacturer standards and experienced across all brands. If your car is pulling to one side, if you've just fitted new tyres, or if you've hit a nasty pothole, book a wheel alignment check at your nearest Motrio garage.
There's one noise every driver learns to recognise sooner or later. A thin high-pitched squeal that appears when you touch the brakes, even gently. Sometimes it fades after the first few hundred yards, sometimes it doesn't. It's not a fault and it's not background noise. It's your squeaky brakes letting you know the pads are getting close to their limit.
How to tell if your brake pads are worn
Brake pads are the parts of the braking system that squeeze the disc to slow the wheel. They're consumable items. Every time you brake, a tiny amount of friction material wears away, and over time the compound runs out. As the minimum thickness approaches, the car sends several fairly consistent signals.
Typical signs that when to change brake pads is coming up soon include a metallic noise or sharp squeal under braking, a brake wear warning light on the dashboard, a less responsive brake with a pedal that travels further than usual, vibration through the pedal or steering wheel, and brakes grinding as a dull metallic sound at low speeds. The dashboard warning for brake wear is one of several lights you should never ignore, and the article on warning lights and icons in your car covers them in detail.
A visual check is very informative. With the wheel off, the remaining pad thickness can be measured directly. Below 3 mm of friction material, replacement should be planned. Below 2 mm it's urgent. Many garages perform this check without removing the wheel, by looking through the caliper opening.
In a balanced braking system, pads aren't the only component to monitor. The disc also wears down, more slowly, and when it drops below the minimum thickness it should be replaced with the pads. Brake fluid, if untouched for more than two years, deserves a parallel check for a complete and safe service.
How long do brake pads last and how much do they cost?
How long do brake pads last depends heavily on driving style and the type of roads you use. In town, with heavy traffic and frequent braking, front pads typically last between 15.000 and 25.000 miles. On motorways and open roads, where braking is less frequent but harder, the interval stretches to 30.000 or 45.000 miles. Rear pads generally last around twice as long as fronts, because they do less work.
These are averages. Spirited driving or heavy loads can halve pad life. Smooth anticipatory driving extends it considerably. Pad wear is also one of the most common items flagged during the annual MOT inspection checklist, so keeping ahead of it pays off at test time too.
Replacement is a fairly quick job. Typically 30 to 60 minutes per axle, unless a caliper is seized and needs rebuilding. The technician removes the wheel, opens the caliper, takes out the old pads, cleans the seats, pushes the piston back and fits new pads. Once the job is done, a short bedding-in period of a few dozen miles is recommended, with gentle braking while the new material mates to the disc.
Brake pads replacement cost and front brake pads cost depend on several variables. Vehicle segment, pad type (standard, low-dust, sport), whether discs also need replacing, the state of the calipers. For an accurate figure, it's best to request a quote from your garage after a quick visual inspection.
There's also a common question about aftermarket brake pads. Choosing non-original parts that meet manufacturer specifications is a widespread practice, often recommended by technicians as a way to keep costs down without compromising safety. Many aftermarket pads are produced in the same facilities as original parts and pass the same ECE R90 homologation standards. The quality and performance of aftermarket pads come very close to originals and are on a par with the leading premium manufacturers in the aftermarket.
Brake pad inspection and replacement at Motrio
Motrio garages carry out brake pad inspection during routine servicing and full pad replacement using original or equivalent parts depending on the vehicle. The inspection also covers discs, calipers and brake fluid.
MOTRIO is the network of independent garages from the Renault Group, with factory-trained technicians and expertise across all makes. If you're hearing brake noise, if the pedal feels less sharp, or if the wear light has come on, it's best not to delay. Book a brake inspection at your nearest Motrio garage.