From a warning light that has just come on to an engine that is running rough, our Hayes garage finds out what is actually wrong, explains it plainly and gives you an estimate before any work starts.
Your vehicle's engine is one of its most important and complex mechanical systems. When problems develop, accurate diagnosis and timely repairs can help prevent further damage.
At MTS Garage Services in Hayes, we provide engine fault investigation, maintenance and repair services for a wide range of petrol and diesel vehicles.
Whether your engine is misfiring, overheating, losing power, consuming excessive oil or displaying an engine management warning light, our team can investigate the symptoms and recommend suitable repairs.
From routine maintenance to more involved mechanical work, we aim to identify the underlying cause rather than simply treating the symptoms.
If your engine isn't performing correctly, contact MTS Garage Services in Hayes to discuss the symptoms and arrange a professional inspection.

A warning light, a stumbling idle or a car that feels flat on a hill is a symptom, not a diagnosis. The same light can come from a worn spark plug, a tired sensor, a vacuum leak or something deeper, and swapping parts in the hope of a fix tends to cost more in the end. We start by reading the fault codes, then test the parts those codes point to and check how the engine behaves. Oil use is treated the same way: we look at leaks, breather faults and wear before suggesting anything. Once we know the cause, we explain it in plain terms, recommend the work and give you a clear estimate before repairs begin. If you would rather keep driving until you have decided, we will tell you honestly whether that is sensible.

Some engine jobs are about getting in before a failure, and the timing belt is the clearest example. On many engines a snapped belt means bent valves and a far bigger repair, so replacing it at the interval the maker sets is sensible. The water pump is often driven by the same belt, which is why the two are commonly done together while everything is already stripped down. Cooling faults need quick attention too. A temperature needle creeping up, a sweet smell, or coolant that keeps disappearing can point to a leaking hose, a failing pump or a head gasket problem. Running an overheating engine can turn a modest repair into a major one, so if the gauge is climbing, stop safely and call us.
Petrol and diesel engines fail in different ways. Petrol cars often suffer from worn plugs, weak ignition coils and faulty sensors that cause misfires and rough running. Diesels bring their own concerns, including turbochargers that lose boost, blocked or sticking components and injectors that no longer deliver cleanly. We investigate each properly before replacing anything, because a turbo is frequently damaged by a cause elsewhere, such as oil supply problems. Occasionally the honest answer is that an engine has suffered damage beyond a sensible repair. In that case we can talk you through a rebuild or a replacement engine, set out what each involves and leave the choice with you, based on how much the vehicle is worth to you.
When a warning light appears or the engine just does not feel right, our Engine Diagnostics Hayes service reads the stored fault codes, checks live data and tests the suspect parts. That shows what has failed and why, so you are not paying for guesswork. We explain the findings and what we recommend before going further.
Read more →Timing Belt Replacement Hayes work covers fitting a new belt, tensioner and idler pulleys, and usually the water pump when the belt drives it. The belt keeps the valves and pistons in step, so replacing it on schedule avoids the engine damage a snapped belt can cause. We check the interval your vehicle needs.
Read more →Chains are meant to last longer than belts, but they can stretch or their guides can wear. Rattling at start-up, rough running or timing fault codes are common signs. Our Timing Chain Replacement Hayes service investigates first, then replaces the chain, guides and tensioner where the fault is confirmed.
Read more →White smoke, coolant loss, oily coolant or bubbling in the expansion tank can point to a failed gasket. We offer Head Gasket Repairs Hayes drivers can rely on for proper testing first, and Cylinder Head Repairs Hayes work such as checking the head for warping or cracks before the engine is rebuilt.
Read more →If your temperature gauge climbs or coolant keeps dropping, our Engine Overheating Repairs Hayes service tests the system for leaks, thermostat faults, fan problems and blockages. Where the pump is failing, we carry out Water Pump Replacement Hayes drivers need, and refill and bleed the cooling system properly afterwards.
Read more →A turbo that whistles, smokes or leaves the car short of power needs checking before it fails completely. Turbocharger Repairs Hayes starts with testing boost pressure, hoses and the oil supply, because the cause often lies elsewhere. We then explain whether repair or replacement makes sense for your car or van.
Read more →A misfire shows up as shaking, hesitation, a flashing engine light or poor economy. Our Engine Misfire Repairs Hayes service finds which cylinder is affected and why, whether that is a plug, ignition coil, injector, compression issue or air leak, and fixes the actual fault rather than guessing.
Read more →When damage is too serious for a straightforward repair, Engine Rebuilds Hayes work means stripping the engine, inspecting it and replacing worn parts. In some cases Engine Replacement Hayes is the more sensible route. We set out both options clearly, so you can decide with the facts in front of you.
Read more →Select your area to see how we help drivers locally. The garage is based in Hayes.




Pictures are for illustration purposes only.
“Have received amazing customer service, always up to date with my repair and their diagnostic was on point. Very good experience overall would definitely recommend.”
“Thank you MTS you have ensured you fixed my car straight away. Diagnosed the problem straight away, fixed efficiently. Friendly staff. I highly recommend MTS.”
“Always my go to, reliable, friendly”
It depends on the light and how the car is behaving. A steady amber light usually means a fault has been logged and the car should be checked soon. A flashing light, or any red warning, means stop safely and call us, as continued driving can cause damage.
Belts usually fail without much warning, so the maker's interval is the guide, and it is based on both mileage and age. Check your handbook or service history. If you bought the car second-hand and there is no record of the belt being done, it is worth asking us to check.
Common causes include low coolant from a leak, a stuck thermostat, a failing water pump, a faulty cooling fan or a blocked radiator. A head gasket problem is possible too. Stop driving as soon as it is safe, because overheating can warp the cylinder head.
Usually after serious internal damage, such as a snapped belt, severe overheating, oil starvation or a failed bearing. We inspect first and explain the options for repair, rebuild or replacement, so you can weigh up the work against what the vehicle is worth to you.
Tell us about your vehicle and we will be in touch.
Prefer to talk? Call 0208 843 9091. Opening hours: Monday to Friday 8:30AM - 5:30PM, Saturday 9:00AM - 1:00PM, Sunday closed.
MTS Garage Services, 5 Chesterfield Way, Hayes, Middlesex, UB3 3NW