9 Of the Most Common Petrol Car Engine Problems

Car engines are complex machines that are prone to various problems, ranging from minor to catastrophic. As a car owner, it's important to stay informed about the most common car engine problems, so you can take action and avoid costly repairs.

In this article, we'll take a look at the 9 most common car engine problems.

Poor lubrication
The engine needs to be lubricated properly in order to function correctly. Without enough oil, the engine can seize up, causing major damage. Make sure to regularly check your oil levels and change your oil according to your car manufacturer's recommended schedule.

Failing oil pump
The oil pump is responsible for circulating oil through the engine. If it fails, your engine won't get the lubrication it needs, causing damage to critical parts. Signs of a failing oil pump include low oil pressure and engine noise. If you suspect a problem with your oil pump, get it checked out by a mechanic.

Oil deposits and debris
Over time, oil can become contaminated with debris and deposits. This can lead to clogged oil passages and reduced lubrication. Regular oil changes can help prevent this problem.

Inadequate fuel and air compression
If your engine isn't getting enough fuel or air, it won't run efficiently. This can cause poor performance, reduced fuel economy, and other problems. Common causes of inadequate fuel and air compression include dirty air filters, clogged fuel injectors, and faulty sensors.

Leaking engine coolant
Your engine needs coolant to prevent overheating. If you notice a puddle of coolant under your car or your engine is overheating, it could be a sign of a leak. Leaking coolant can damage your engine and should be fixed as soon as possible.

Blocked engine radiators
Radiators are responsible for cooling your engine. If they become blocked with debris, they won't be able to do their job effectively, causing your engine to overheat. Regular maintenance, including flushing your radiator, can help prevent this problem.

Prolonged engine detonation
Detonation is when the fuel in your engine explodes instead of burning smoothly. Prolonged detonation can cause serious damage to your engine, including cracked pistons and damaged bearings. If you hear knocking or pinging noises coming from your engine, get it checked out by a mechanic.

Damaged oxygen sensors
Oxygen sensors measure the amount of oxygen in your car's exhaust and help your engine run efficiently. If they become damaged or dirty, your engine may run poorly or use more fuel than normal. Regular maintenance can help prevent this problem.

Faulty spark plugs and or coil packs
Spark plugs ignite the fuel in your engine's cylinders. If they become fouled or worn out, your engine may misfire or run poorly. Make sure to replace your spark plugs according to your car manufacturer's recommended schedule.

Look After Your Car and It Is Less Likely To Let You Down
In conclusion, car engine problems can be expensive and inconvenient. Regular maintenance and attention to warning signs can help prevent many of these problems from occurring. If you suspect a problem with your engine, don't wait to get it checked out by a mechanic. By taking care of your car's engine, you'll enjoy better performance, increased fuel economy, and a longer lifespan for your vehicle.

IMI Certified Tuning Specialist

MPG Tuning Ltd
Unit 44 Rumerhill Business Estate
Cannock, Staffordshire, WS11 0ET


 Tel: 01543 466662


MPG Tuning Offer Professional ECU Remap and Tuning services including but not limited to ECU Remapping, EGR Delete, DPF Solutions, VAG Emissions Recall Scandal Rollback, Tricore Processor Programming, Boot Mode, and Traditional Chip Tuning.

MPG Tuning is based in Cannock Staffordshire but serves customers from further afield typically from the following areas, Lichfield, Burntwood, Rugeley, Stafford, Brownhills, Walsall, Wolverhampton, Birmingham, Tamworth plus many more areas throughout the West and East Midlands.

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I went for a remap on my T5 as it had an awful flat spot around 2800 rev's I got great personal service and its like having a new engine in the van smooth power and greater economy.... Highly recommended wish I'd done it months ago it would have paid for it self already thanks a lot hills are no longer a drag.

Adrian McManus

Popped in to see Mike on Friday to have my A4 2.0TDi 170hp remapped. Have to say I was a little pessimistic at first having being told by another firm that remaps on these were a nightmare so was expecting the worst! Thankfully, nothing of the sort, straight in, one error message unknown but Mike worked it out and all done in no time. Straight out for a test run and the drive is very different, certainly mid ranged (where these engines seem to suffer) pulls away nicely and can definitely feel the benefit. Best money I've ever spent on a car in, well, forever! Thanks again Mike

Mark Patterson

Had the ECU my 320D remapped by Mike yesterday. Very impressed with the results. Noticed it straight away after having it done. Service was also great, talked me through all of it to get exactly what I wanted out of it. Highly recommend mpg tuning.

James Aston

Took my Civic Mk VIII 2.2 CDTI to Mike following a recommendation from a friend who's had his last few cars remapped at MPG., professional service and answered any questions I had. Customised remap that gave me a good balance between performance and economy. Mike was happy to let me watch the whole procedure and explained what he was doing. Makes a good brew as well! Would highly recommend, Will definitely bring my future motors here.

Dan Wright

Just had the ECU on my BMW 320D remapped and it is absolutely superb the power is unbelievable and the service is outstanding would recommend it to anybody he has transformed my car from 160 bhp to 207 bhp no smoke at all and the power delivery is awesome throughout all of the gears really happy.

Tom Dawson

Had my Astra 1.9cdti remapped here with EGR delete for a great price, I have now got the full power and yes it's rapid lol.... Mike was helpful and talked me through it all and also good after care as well. Thanks again.

Scott Walker

Had my T5 remapped today. Over the moon with the results! Really reasonable price and customer service is second to none! Would highly recommend!

Ethan Tunnicliffe

I had my car remap done and I'm really pleased with MPG Tuning. Great atmosphere, great service and I will recommend it to all my friends. Thank you once again. Renault Megane 2.0 Turbo petrol with 165 hp standard

David Wojtasik

Took my Astra estate for a ecu remap, excellent job feels a lot more responsive!

Umair Khalid

Mike remapped my car. Perfect professional service from start to the end. For less than 2 hours everything was done. If you want a different feeling when you are driving MPG Tuning is your place to go.

Dimitar Dimitrov

My boyfriend has exactly the same car as me 1.5 diesel fiesta, had his remapped and was over the moon with it. I had never thought of having a car remap but after driving his, mine felt heavy and slow so decided to get mine done too, now I am converted I love it even more and I am getting about 80-90 miles per tank better than before, very happy , great friendly service and awesome cuppa while we waited

Kelly Williams

Had my renault van remapped at mpg tuning, awesome power, can now keep up with pigeons, thanks Mike for an excellent job 👍👍



Our lead technician has over 16 years’ experience in the tuning industry and long term connections with some of the Worlds most experienced data programming and tuning specialists. We are extremely passionate about our customer satisfaction and strive for a perfect result every time.

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