Car Diagnostics | Book a Car Diagnostic for your Toyota| RAC

£33.33

Average price for this repair for your Toyota 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 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.

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.

Try one of our RAC Approved Garages

View all garages

T & K Motors

5.0/5

T&K Motors have been established for more than 30 years and are a helpful friendly garage, we carry out MOT’s, servicing and mechanical repairs on all makes and models of vehicles. We pride ourselves on offering main dealer quality of work, at independent prices, whilst ensuring that your warranty remains intact by using genuine or manufacturer approved parts, and are usually able to save you over 60% in price comparison. Our mechanics are fully qualified with many years of experience behind them in the motor industry, who take great pride in their work. Our services include the following; • All makes serviced to manufacturer's specification • MOT VOSA class 4 and 7 Car and Light Commercial • Air Conditioning re-charge and leak testing • Batteries/Alternators checked and replaced • Brakes pads and discs, brake fluid changes • Clutch replacement and repair • Cylinder Head repairs • Engine management light diagnostics • Exhausts repaired and replaced • Free vehicle health check • Fuel injection diagnostic/repair • Oil and filter changes • Suspension spring replacement specialists • Timing belts and water pump replacement • Tyres fitted, balanced and aligned • Van servicing and repairs • Free Vehicle diagnostic checks • Welding repairs to MOT standard • Warning lights diagnosed and reset * Car Service, Van Service, Commercial vehicle service

47-53 Green Street, Ayr, KA88BQ

Acton Service Centre

4.2/5

Acton Service Centre came under new management in 2012. A family run business that prides itself in offering excellent customer service and professional workmanship. Our highly trained engineers and technicians are committed to providing you with the solution to all your motoring needs. Based in Acton just off the A406, our modern reception and viewing area has been newly designed for the comfort of our large base of loyal customers.

17-18 The Broadway, Gunnersbury Lane, Acton, W38HR

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

M & M Garages LTD

4.4/5

M and M Garages Ltd has been established since 1981 and with its present owner for over 16 years. The owner is vastly experienced at working on a huge range of cars and personally oversees the work carried out. M and M Garages Ltd prides its self on being able to offer 'The Complete Garage Service' at realistic prices. The work carried out will be thorough and reliable. We do not carry out unnecessary work on vehicles. You will find the staff, and the owner, friendly and helpful. Many of our customers return year after year and refer others to us. If planned in advance we can often arrange a courtesy car for customers if required. Most major credit and debit cards accepted.

The Old And Skin Warehouse, Snowdon Road, Middlesbrough, TS2 1DB

Millennium Garages Ltd - RAC Approved Garage

5.0/5

Millennium Garages is based in Southwark, London offering MOTs, Services and Car Repairs using industry-standard equipment and fully trained staff with over 40 years of experience in the motor industry. Since 2019, Millennium Garages Ltd has been a RAC Approved Garage. ALL Customers, Including RAC Warranties, are responsible for paying Congestion Charge and ULEZ when required for their vehicles.

Arches 43 - 47, Kings Bench Street, London, SE10QX

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.