Service, Repairs & MOT

Alternator repair in Truro

Book an RAC Mobile Mechanic and we’ll come to you at home or work.

  • 12-months parts guarantee
  • Honest pricing
  • Exceptional customer service

£412.96

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

Trustpilot rating for all RAC Mobile Mechanics.

Why choose the RAC for an alternator repair?

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 Truro

Our top pick

RAC Mobile Mechanic in Truro

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 an alternator repair

If your car’s battery keeps dying or electrical systems are acting up, it could be a faulty alternator. Your alternator should charge the battery properly, and if it doesn’t, you could need an alternator repair.

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 diagnostic

For when you know something isn’t right, but you’re not sure what – our mobile mechanics are here to help.

We’ll look for any mechanical or electrical problems. If we need to, we’ll also check your car’s onboard engine management system. Depending on your car and issue, this will usually include: – Engine – Power steering – Brakes – Transmission – Exhaust system – Fuel injection system – Cooling system and air flow – Sensors
If we detect any issues, we'll talk through what needs to be repaired. We’ll give you a no-obligation quote to fix it on the spot, if we can. Or we’ll recommend a local RAC Approved Garage, and give you a full error report to take there.

And it’s not just alternator repairs that we do in Truro

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

P C Tonkin & Son Ltd

5.0/5

1912 As Cornwall’s longest establish car dealership, here at PC Tonkin & Son we are proud of our 110 year history which has spanned four generations of the Tonkin family. Let us tell you more….. Like any business, ours started from humble beginnings back in 1912. In the early years of the business, Preston Tonkin (26 in 1912) worked from his home at Wesley Terrace in Bugle. His business started repairing motor cycles and bicycles. At the same time, he also worked within the local clay industry. As his reputation grew, Preston moved to work from premises at Roche Road and also began selling motor cycles, becoming an agent for manufacturers including Enfield, B.S.A. and Sunbeam. In 1924 he acquired the Austin franchise, the beginning of a business relationship with the marquee that would last for almost half a century.
77 Fore Street, Bugle, St. Austell, PL268PD

M R Autos

5.0/5

We have been established for over 7 years and in that time have built up a great reputation. We pride ourselves with great customer care, honesty and reliability whilst still low and competitive pricing. We go out of our way to help out our customers and make sure they go away happy with the services we have provided them, Members of the good garage scheme check out our excellent reviews.
Unit 20G Long Rock Ind Est, Penzance, TR208HX

Threemilestone Garage

4.8/5

Here at Threemilestone Garage we aim to give our customers the best possible service. We have a reception/waiting area with free tea, coffee, hot chocolate, a water machine and Wi-Fi at your disposal. We have a full MOT and repair station. We also now have a full body repair and spray shop.
3C Threemilestone Ind Est, Threemilestone, Truro, TR49LD

A30 Auto Service Centre

4.7/5

RAC Approved Car and Van specialist Service Centre with over 75 years of experience, We also offer MOT, Servicing, and light repair for all other vehicle types. Our highly skilled technicians are dedicated to ensuring your vehicle is running smoothly and efficiently. Contact us today to schedule your appointment and experience the best in automotive care. SERVING ALL AREAS OF CORNWALL INCLUDING ST AUSTELL, BODMIN, WADEBRIDGE, TRURO & VICTORIA CONTACT US TODAY TO SCHEDULE YOUR APPOINTMENT AND EXPERIENCE THE A30 AUTO SERVICE CENTRE DIFFERENCE.
Unit 4B Victoria Industrial Estate, Victoria, St Austell, PL268LX

Xpress Garage & Mot Centre Falmouth

3.7/5

Here at Xpress Garage is the largest independent garage, tyre specialist, and premiere car care centre in Falmouth / Penryn. We are experts in automotive repair including Tyres, Brakes, MOT's, Servicing, Clutches Cambelts, Electrical advanced Diagnostics Air-con, 3d computerised wheel alignment, puncture repairs and full workshop facilities. We're open 6 days a week, from 8.15 am to 5.30 pm Monday to Friday, and 8.15 am to 2 pm on Saturdays. We have a comfortable customer waiting area with FREE hot drinks, TV superfast wifi, and knowledgeable friendly staff. We also offer FREE courtesy cars, and a FREE drop off and pick up service to your home or place of work. We are also RAC, AA certified garage with Motorcodes, RMI & Trust my garage Approved Repair Centre, in Falmouth/Penryn. ISO 9001 Accredited
Xpress Garage And Tyre Centre, Units 3-4 Tregoniggie Industrial Estate, Falmouth, TR11 4SN

Frequently asked questions about car alternator repairs

Driving with a bad alternator isn't a good idea. A failing alternator can make the battery drain fast, leading to a breakdown. Electrical parts may also stop working, which can be unsafe. It’s best to get the alternator checked and fixed or replaced as soon as you can.

When the alternator fails, the battery won't charge and will drain. This can make the car stall and prevent it from starting. Electrical parts like lights, radio, and power windows may stop working. Get help from a mechanic right away to avoid more damage.

Alternator reconditioning means fixing an old alternator by replacing worn-out parts. This can be cheaper than buying a new one, but it may not last as long as a new alternator.

The cost of an alternator varies by the type of car and the quality of the alternator. To know exactly how much, you should talk to your local mechanic.

Yes, alternators can be repaired if the damage isn't too bad. If the alternator is very damaged, it may be better to replace it.

Replacing an alternator is often worth it if the alternator is old or very damaged. A new or rebuilt alternator can work better and prevent future problems. Talk to a mechanic to help make the best choice.

Alternators usually last between 80,000 and 150,000 miles. But it can vary based on where and how you drive, and maintenance. Regular check-ups and fixing problems early can help it last longer.

Some alternator repairs or replacements may be covered under the car’s warranty, especially if the car is still new. Check your warranty details or talk to your mechanic to see if it's is covered.

They’re often not covered by standard car insurance policies because they're thought to be part of your vehicle's upkeep. But, if it's damaged in an accident, it might be covered.

You need an alternator replacement when it's very damaged or has worn-out parts that can't be fixed. If it's not keeping the battery charged or causes electrical issues, you'll need to replace it.