Book a Car Diagnostic in Stevenage

£153.09

Average price for this repair in Stevenage in the last 30 days^

Trustpilot rating for all RAC Mobile Mechanics.

Why choose the RAC for a car diagnostic?

With RAC Mobile Mechanics, you can avoid the hassle of taking your vehicle to a garage. They can do a vehicle diagnostic check on your driveway, so you don't even need to leave the house.

When it comes to diagnosing issues with your vehicle, our friendly expert mechanics are here to help. We use state-of-the-art diagnostic equipment to accurately identify any problems, ensuring your vehicle runs smoothly and safely. The price includes the diagnostic service – no hidden costs. Just friendly, honest experts.

Close up of an RAC Mobile Mechanic underneath a car

Our top pick in Stevenage

We’ll come to you at home or work

RAC Mobile Mechanic in Stevenage

At the RAC, we’ve got over 125 years’ experience in offering complete peace of mind to our members. We’re best known for our breakdown service. And now – our new RAC Mobile Mechanics are here to help make every day motoring easier. If you need a service or repair, they’ll come to you at your home or work.

A customer tending to her garage with an RAC Mobile Mechanic in the background

Book a car diagnostic

Our mobile mechanics will spend up to 30 minutes checking your car for faults and talk you through any repairs you might need and give you a report for your records. There are various ways we can check for faults, which could include plugging in to check your car’s onboard engine management system.

OEM quality parts

We use original equipment manufacturer (OEM) standard parts, which means every new part will be the same standard and same quality as the original part it replaced.

Mechanics you can trust

Our mobile mechanics are friendly, honest, and backed by the RAC.

Close up of an RAC Mobile Mechanic running a vehicle diagnostic check

Book a repair

It’s easy to book a car repair online. We bring the garage to you with RAC Mobile Mechanics, or find a trusted local garage. Common repair jobs include:

Clutch Replacement

We diagnose and repair clutch issues – whether your clutch is heavy or slipping, or you’re having trouble changing gears.

Alternator repair

We check and correct alternator faults to keep your charging system running smoothly.

Oil change

Oil is vital to a healthy engine, so it’s important to change it regularly.

Brake pads & Discs

If your brakes are making noise or you’re noticing reduced stopping power, it’s likely time to replace your brake pads or discs.

Average cost of a vehicle diagnostic by car make^

The RAC charges a flat rate for the cost of a car diagnostic but prices may change due to inflation. According to RAC data, the average cost of a car diagnostic is £87.

Make	Average price
Ford	£105
Vauxhall	£105
Volkswagen	£105
Peugeot	£104
Mercedes-Benz	£104
Nissan	£106
BMW	£107
Audi	£106
Renault	£104
Citroen	£104

^Average price quoted for RAC Mobile Mechanics from 01/01/25 to 31/03/25.

And it’s not just car diagnostics that we do in Stevenage

Mobile mechanics bring the garage to you, saving you the hassle of getting your car to a garage. If you need a service or repair, they’ll come to you at your home or work.

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

TGPP-Autocare

5.0/5

TGPP-Autocare Stevenage, we pride ourselves on delivering high-quality car repair and maintenance services to keep your vehicle running smoothly and safely. Located conveniently in the heart of Stevenage, our garage is fully equipped with state-of-the-art technology and staffed by a team of Friendly experienced, certified technicians who are passionate about cars.

Unit 8, Chells Industrial Units, Stevenage, SG20LQ

Dom`s Garage

5.0/5

Dom`s garage are a small family run independent garage, who take great pride in offering our customers a friendly, honest and high quality service that meets their needs every time. Our technicians have over 30 years of experience in the motor industry between them and we are comfortable working on all makes and models of both modern and classic cars. We are more than happy to provide you with advice, should you need any information or help regarding your vehicle, and will only ever carry out work on your car if it is actually necessary and always with your prior authorisation. Our Services include; - Complete Computer Diagnostics - Complete Safety Analysis - Drivability Problems - Tune-ups - Oil Changes - Tires - Brake repair specialist - Mufflers and exhaust systems - Steering and Suspensions - Alignments

Unit 11, Protea Way, Letchworth, SG61JT

IN'n'OUT Autocentres Stevenage

4.6/5

At IN’n’OUT Autocentres we offer fixed prices MOTs and Servicing for any make and model of car with no hidden extras. We are proud to be a ‘Which? Trusted Trader’ so we are really a garage you can trust. We also have a 5 Star Trustpilot reviews rating. We provide OEM parts and 12 months warranty on all parts and servicing. We only use premium Castrol oils in all servicing. Our services are all completed ‘while-u-wait’ so you have never have the inconvenience of losing your car for the day. You can watch your car as it is being worked on through the viewing window or sit back and relax in our clean and comfortable customer lounges with FREE Wi-Fi and coffee and read the latest magazines. Check out our latest reviews and BOOK NOW!!

Roebuck Retail Park, Stevenage, SG1 1XZ

Collect Service Go

4.5/5

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.

29 Burrowfields, Welwyn Garden City, AL74SS

JN Tyres Autocare Ltd.

4.0/5

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

Swallow End, Welwyn, Hertfordshire, AL71JA

Frequently asked questions on car diagnostics

How much does it cost to diagnose a car problem?

The cost you pay can vary depending on the type of car and how complicated the diagnostic test. Check with your mechanic for a quote.

Is a car diagnostic test worth it?

Yes, a diagnostic test may save you a lot of money. It finds issues early before they become costly repairs. It can also keep your vehicle running efficiently and safely.

Can I do a car diagnostic myself?

While you can buy a diagnostic tool, interpreting the results needs expertise. It’s best if you to have a professional mechanic perform the test.

How long does a car diagnostic test take?

Diagnostic tests take from 30 minutes to a few hours. This depends on what issues are being looked at.

What are common car diagnostic codes?

Common diagnostic trouble codes include:

P0300: Random/Multiple Cylinder Misfire Detected
P0420: Catalyst System Efficiency Below Threshold
P0171: System Too Lean (Bank 1)

These are general examples, so your car may have different codes. Always check with a mechanic so you get an accurate diagnosis.

Is a car diagnostic test necessary for a service?

Yes, they are. Regular diagnostics can help keep your car in good health. It makes sure that underlying issues are addressed quickly, so you can drive with peace of mind on the road.

Again, keep in mind that mechanics might have their own checklists. Chat with your mechanic to be sure that they address any specific issues you have.