Car Diagnostics | Book a Car Diagnostic for your Toyota

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 for your Toyota

Our top pick

RAC Mobile Mechanic for your Toyota

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.

And it’s not just car diagnostics that we do for your Toyota

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

MR CLUTCH

5.0/5

HIGHLY EXPERIENCED TECHNICIANS . FREE DIAGNOSTIC CHECKS , NATIONWIDE WARRANTIES , ESTABLISHED OVER 35 YEARS

11 Goulds Close, Bletchley, Milton Keynes, MK1 1EQ

Farnsfield Auto Centre

4.3/5

Farnsfield Auto Centre is a family owned garage servicing all your vehicle needs in Nottingham, Farnsfield and Newark areas. We are a full serviced garage located in Southwell Road in Farnsfield. Servicing cars and vans in the local area has provided us with a 2nd to none customer service and reputation. Our reputation is built on quality and efficiency when it comes to automotive servicing sector. Our technicians are all fully qualified and highly trained, and are always available to answer your questions around car problems or parts in the Nottingham, Farnsfield and Newark areas.

Southwell Road, Farnsfield, Newark, NG228EB

Holme Valley Testing

5.0/5

This is our Holme Valley Testing Station Mot Test Center page. We have listed the full address of Holme Valley Testing Station, phone numbers and websites. Holme Valley Testing Station is in Holmfirth, Holme Valley Testing Station offers cheap mot tests, weekend mot tests and cheap night mot tests in Holmfirth. They also offer mot car servicing and car mot testing in Holmfirth.

Unit 16, Honley Business Centre, New Mill Rd, Holmfirth, HD96QB

Auto-Line MOT Centre

5.0/5

Here at Auto-Line M O T we offer high quality servicing and mechanical repairs. We carry out any repairs to industry standard service manual labor times. We also offer a free collection and delivery service and vehicle movement services, which are subject to availability. We are a small close-knit team of two technicians with over 30 years of experience between us. We have a real passion for what we do and carry out every single job, no matter how big or small, to the highest standards. Owner Oliver is fully licensed, insured and qualified in the following; DVSA registered Authorised Examiner and mot tester Automotive Refrigerant Handling (EC Level 3 Award (IMI Awards Ltd) Light Vehicle Maintenance and Repair Competence, Level 3 Diploma (IMI Awards Ltd) Light Vehicle Maintenance and Repair Principles, Level 2 Diploma (IMI Awards Ltd). Numerous product courses with Ford Numerous product course with jaguar land rover Numerous product courses with BMW Luke is a landrover master technician Very experienced with all makes and models as comes from and aftermarket background. Light Vehicle Maintenance and Repair Competence, Level 3 Diploma (IMI Awards Ltd)

Unit 17 British Waterways Yard, Shardlow, Derby, DE722HL

GMC Car and Commercial Repairs

4.6/5

GMC Car and Commercial Repairs is a local independent garage based in Paisley that has over 20 years experience in providing repairs, servicing and maintenance on all makes and models of cars, vans and trucks. Our talented and skilled technicians have a wealth of knowledge and understand how important it is you receive an honest and efficient service. We are recognised for our diagnostic services and have all of the latest equipment and technology to correctly pinpoint any faults. This can ultimately save you a great deal of money. Once we have carried out a diagnostic assessment, we shall discuss any further work with you and talk through your options. All our parts are of high quality and are sourced from a highly regarded supplier and come with a standard manufaturer warranty. We want all of our customers to receive a terrific experience, our friendly team will always go the extra mile for you. A collection and delivery service is available for those that are within a 10mile radius.

Unit 1, 99 Greenhill Road, Paisley, PA31RD

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.