A customer in the garden with an RAC Mobile Mechanic in the background.A close-up of a customer tending to her garden with an RAC Mobile Mechanic in the background.
Service, Repairs & MOT

Car diagnostic for your Nissan

Book an RAC Mobile Mechanic to diagnose the problem at home and get £50 off repairs over £150

  • State of the art equipment
  • No hidden costs
  • Mechanics you can trust

T&Cs apply. Offer ends 17/08, 23:59.

£123.20

Average price for this repair for your Nissan 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 for your Nissan

We’ll come to you at home or work

RAC Mobile Mechanic for your Nissan

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. Plus, when we’ve diagnosed the problem get £50 off mobile mechanic repairs over £150 – for a limited time only. T&Cs apply. Offer ends 17/08, 23:59. 

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.
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:

We diagnose and repair clutch issues – whether your clutch is heavy or slipping, or you’re having trouble changing gears.
We check and correct alternator faults to keep your charging system running smoothly.
Oil is vital to a healthy engine, so it’s important to change it regularly.
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 for your Nissan

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

Heath Mill Garage

5.0/5

A real alternative to the Main Dealers offering Servicing, Tyres, Exhausts, 4 Wheel Alignment, Air Con and much more. Conveniently located on Heath Mill Road, Wombourne, close to Sainsbury's we offer a full range of facilities with a reception and waiting room, we also have courtesy cars available. We use top quality parts such as Brembo Braking and Shell Oils to ensure your vehicle is running at it's best. We also update Electronic Service Records for modern vehicles without a service book.
Heath Mill Road, Wombourne, Wolverhampton, WV58AP

Triad Of Newport

5.0/5

At Triad our aim is to supply the quality cars at competative prices.All our cars are prepared in our own workshops that carry out servicing, Mot's, Aircon regas,Diagnosis using the latest equipment.Customer satisfaction is our main goal whether you are buying a car or just having a service/MOT. No gimmicks to get you through the door just good old fashioned service." We are a RAC approved workshop and used car sales.
Triad Of Newport, 104 Main Road, Newport, HU15 2RG

Bodywyse Autocare Ltd.

5.0/5

.“Bodywyse Autocare Cupar Ltd is a one stop shop for all of your motoring needs. We offer a full range of services including Servicing, MOTs, Tyres, Brakes, 4 Wheel Alignment, Air Con and of course Accident Repair, along with any mechanical work you might need for cars and commercial vehicles. We are an insurance approved body shop, partnered with PSA’s own Eurorepar Car Service network and regulated by the Independent Garage Association. This means that we can offer a manufacturer level of service at a very competitive price whatever you might need. We offer fixed price servicing and all work is guaranteed, insuring a high standard of quality. We pride ourselves on our customer service and any of our staff will be happy to assist in helping with any requests you may have. Give us a call for all your vehicle needs.”
Prestonhall Industrial Estate, Cupar, Fife, KY154RD

Turner Brothers

4.8/5

Established in 2000, Turner Brothers has grown in to one of the most comprehensive and forward thinking garages in the area. Services include anything from bulb replacement to full engine rebuilds and body shop facilities. We are a recommended Bosch Service Centre.
Turner Brothers Limited, Bottoms Mill, Woodhead Road, Holmfirth, HD9 2PX

Edinburgh Car Services Mot & Service Centre

4.9/5

Welcome to Edinburgh Car Services As an independent, family run business, we at Edinburgh Car Services pride ourselves on delivering the highest quality of vehicle maintenance and repairs for our customers. With Over 30 years’ combined experience we have a passion for the work we do, and only ever use the highest quality parts. But we know motoring is expensive and most of our customers would rather spend their hard earned money on something else, so within those parameters, we keep our prices to a minimum as much as possible. Of course, we also cater for petrol heads and enthusiasts who want to splash out on their cars, offering performance upgrades and advanced components. We are an Edinburgh based, Scottish, independent, family run garage and offer a vast range of services within the motor trade. All of our service plans are tailored personally for each individual’s vehicle, ensuring the best in-depth analysis and repair. We are always happy to advise on he best course of action for any customer, and we are as up-front as we possibly can be about costs. That includes fixed price servicing, which is carried out to manufacturer specifications and will cover your warranty – despite what expensive main dealers might say! We pride ourselves on our vast knowledge of the trade and are highly respected in the motor industry. As we are a small family business we put 100% in to looking after our customers and their vehicles. We know we need our clients as much as they need us! Garages can be a daunting place for many people, but our staff – male or female – will be more than happy to answer any queries you may have.
Unit 7, Bankhead Terrace, Edinburgh, EH113HP

Frequently asked questions on car diagnostics

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.

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

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.

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

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.

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.