Book an Engine Repair in Harpenden

Why choose the RAC for an engine repair?

At the RAC, we've got over 125 years' experience helping UK drivers. We have the skills and knowledge to keep your vehicle running. We'll give you results you can rely on at a price you can afford.

Close up of an RAC Mobile Mechanic underneath a car

Book an engine repair

An engine is the heart of a vehicle, It turns fuel into power to get you moving to where you want to go. So, when something’s wrong, it’s important to get it fixed.

Quality work

Any work done will meet the high standards set by the RAC.

Exceptional customer service

We’re friendly, straightforward and jargon-free

A mechanic inspecting the underside of a vehicle.

Book a diagnostic

A mechanic will check your car for faults and talk you through any repairs you might need. There are various ways to check for faults, which could include a physical examination or plugging in to check your car’s onboard engine management system.

Diagnostic check

We’ll look for any mechanical or electrical problems. If we need to, we’ll also check your car’s onboard engine management system. Depending on your car and issue, this will usually include: – Engine – Power steering – Brakes – Transmission – Exhaust system – Fuel injection system – Cooling system and air flow – Sensors

And it’s not just engine repairs that we do in Harpenden

RAC Approved Garages offer MOTs and services. Our professional mechanics have the expertise and experience to make sure your vehicle is operating safely and efficiently – results you can rely on at a price you can afford.

A close up of an RAC mobile mechanic looking under the hood of a car

Try one of our RAC Approved Garages

View all garages

Parkway Garage LTD

Garage Services and MOT's at Very Competitive Prices MOT's, Servicing, Repairs, Cambelt's, Clutches, Tyres, Diagnostics and much much more. Luton's MOT, service and repair specialists As a well established, family run garage we offer our services to domestic, light commercial and fleet clients and have developed an excellent reputation throughout Luton. Performing MOTs while you wait, our highly qualified mechanics are always on hand to offer an expert opinion and provide free quotations for all car servicing and repair work.

Parkway Garage Ltd, 3 Gloucester Road, Luton, LU13HX

Universal Clutches Limited

Universal Clutches have an established Bedfordshire customer base for clutch, gearbox and brake repair built on customer trust and satisfaction - to deliver a level of service that is unbeatable in the Luton, Bedfordshire area. Our customers are our most successful advertisement because through the years our business has been built on and grown through referral of our specialist clutch, gearbox and brake repair services.Universal Clutches is a professional garage specialising in Clutches, Gearboxes and Brakes ÔÇô we also offer a recovery service if your vehicle needs collecting.Universal Clutches and Gearboxes is totally committed to provide honest and accurate advice that is in the best interest of the customer. Supported by quality work and a friendly efficient service at a price that represents excellent value. This way we can expect to continue winning your support as a loyal customer.Universal Clutches has been operating in Luton, Bedfordshire since 1996 offering repairs and fitting for the public and also the trade.

8C Cosgrove Way, Luton, LU11XL

JN Tyres Autocare Ltd.

JN Tyres Autocare Ltd 7 Swallow End, off Swallowfields Welwyn Garden City Herts AL7 1JA

Swallow End, Welwyn, Hertfordshire, AL71JA

SpinFix Tyres & Auto Services Welwyn Garden

At Spinfix, we pride ourselves on being more than just a tyre service – we’re your complete autocare partner. Our team of skilled and experienced technicians ensures that every job, from emergency tyre fitting to full MOT servicing, is carried out with precision and care. We combine professional expertise with affordable pricing, offering transparent costs and excellent value without compromising on quality. With a wide range of services available under one roof – including tyres, brakes, diagnostics, and complete workshop solutions – we make it easy and convenient to keep your vehicle in top condition. Whether you visit our fully equipped workshop or call us for mobile tyre fitting, our goal is always the same: fast, reliable service and complete customer satisfaction. Choosing Spinfix means choosing trust, efficiency, and peace of mind on every journey.

Unit D 27 Bridge Rd East, Welwyn Garden City, AL71JE

Collect Service Go

We are a professional reliable garage. Customer satisfaction and vehicle safety is an our main priority! All repair work comes with 1 years parts and labour warranty, we also only use OE quality parts, this guarantees any manufactures warranty you may have. Meaning even the newest Cars can be brought to Collect Service Go. Specialise In Car servicing and maintenance, MOT Testing, Brakes, Tyres, Clutches, and General Repairs. Collection and delivery available please contact for more details.

Unit 2 East Burrowfield, Welwyn Garden City, AL74TB

Frequently asked questions on engine repair

What should I do when my check engine light comes on?

When the check engine light comes on, it’s best to see a mechanic right away. This could mean anything from a minor issue to something serious.

What should I do if my car overheats?

If your car overheats, pull over safely and turn off the engine. Let it cool down, then check the coolant level. Add coolant or water if needed and get professional help quickly if this doesn’t fix the problem.

When should I change my engine oil?

Engine oil should be changed every 5,000 to 7,500 miles. Check your owner’s manual for the exact recommendations for your car.

Why is my engine oil discoloured?

Discolored oil can mean it’s old or mixed with coolant or fuel. It’s best to get it checked by a mechanic.

Is the engine repair or replacement part of the warranty?

It depends on your warranty. Many cover engine repairs up to a certain mileage or time. Check your warranty details or ask your dealer.

Is engine repair or replacement covered by insurance?

Engine repairs or replacements are typically not covered by standard insurance policies unless the damage is from an accident or other covered event. Check your policy for details.

How much does engine repair or replacement cost?

It varies widely. Minor repairs might be a few hundred pounds, but major repairs or replacements can cost several thousands. Always ask your mechanic for more information.

How much will an engine repair misfire cost me?

The cost of repairing a misfire depends on the issue. Common causes include faulty spark plugs, ignition coils, or fuel injectors.

Is it worth it to repair a car engine?

It depends on the repair cost, your car’s value, and its condition. If the repair costs more than the car’s value, you might be better off getting a new one.