Car Diagnostics | Book a Car Diagnostic in Chelmsford

£241.68

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

Trustpilot rating for all RAC Mobile Mechanics.

Why choose the RAC for a car diagnostic?

At the RAC, we've got over 125 years' experience helping UK drivers. We have the skills and knowledge to keep your vehicle running.

Plus, with RAC Mobile Mechanics, you can avoid the hassle of taking your vehicle to a garage when you need a repair. We’ll come to you, at your home or work.

Close up of an RAC Mobile Mechanic underneath a car

Our top pick in Chelmsford

Our top pick

RAC Mobile Mechanic in Chelmsford

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.

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.

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

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.

Try one of our RAC Approved Garages

View all garages

JC Autocare Ltd

5.0/5

We are an independent garage with a wealth of experience in the motor trade. Working on all makes and models, we offer a wide range of services. We are also trained Land Rover and Jaguar technicians with expertise in this area.

Unit 4 Long Acre Farm, Hockley, Essex, SS55LR

Eastern Garage

4.7/5

Eastern Garage is your local independent garage that has been established since 1950. We have been serving the local community for over 60 years and hope to do so for many more years to come. The current owner, Martin Sheath, took over in 1989 and runs a team of 10 employees. Our technicians have over 60 years of combined experience with all makes and models of vehicles. By choosing us to repair your vehicle, you can be assured that your vehicle will receive the care and attention it needs and deserves. We are able to carry out all repairs in line with manufacturers recommendations.

Wethersfield Road, Essex, CM7 4NT

Wickford Autocentre

4.6/5

Going by first impressions, Russel Gardens in Wickford may not be the sort of place where you would expect to find a modern auto centre, and especially not one that can offer you fixed MOT and Servicing prices. However, that is exactly what you get with Wickford Autocentre. When Mr Choudhury decided to purchase the site of a former garage and used car sales dealer, he decided it would be to start afresh by completely stripping the site of its infrastructure including tools and machinery. Following a very high figure cash injection into this business, Wickford Autocentre now offers many facilities and services, many of which are usually only found in main dealerships. These include but are not limited to; MOTs / Servicing / Tyres / Nitrogen Tyre Inflation / Brakes / Auto diagnostics / Air condition servicing / Timing belts / Head gasket / All major repairs undertaken / Accident management services. Economical servicing options for are available every pocket and we also offer up to 12months parts and labour warranties to ensure total customer confidence. Every service includes free brake, exhaust, shocks, tyre, battery and clutch checks. A top-down overhaul has catapulted the auto centre into popularity with the local vehicle operators and motor traders. With a transparent, competitive and fair pricing strategy, a significant number of private car users are making a switch to Wickford Autocentre. So if you are looking for a customer friendly, economical and competent technical team to look after your vehicle, call into Wickford Autocentre today!

Russell Gardens, Wickford, SS11 8BH

IN'n'OUT Autocentres Basildon

4.4/5

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!!

East Mayne, Basildon, SS131BW

LDN AUTO SERVICES LTD

4.0/5

Welcome to LDN Auto Services, we take pride in offering a wide range of services to cater to all your vehicle repair needs. From basic maintenance tasks such as oil changes and brake inspections to more complex repairs like engine overhauls and transmission replacements, our team of skilled technicians is here to ensure that your vehicle is running smoothly and efficiently. Trust LDN Auto Services for all your automotive needsHighly experienced technicians with expertise in a wide range of vehicles - RAC Approved Garage - State-of-the-art equipment to diagnose and repair vehicle issues efficiently - Competitive pricing and transparent billing for quality service

Unit 9, Harrison Drive, Braintree, CM71DE

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.