An RAC Mobile Mechanic using a diagnostic machine inspecting a car for an alternator repair.A mechanic using a diagnostic machine to inspect a car vehicle engine
Service, Repairs & MOT

Alternator repair in Sheffield

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

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

£432.08

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

Trustpilot rating for all RAC Mobile Mechanics.

Why choose the RAC for an alternator repair?

With RAC Mobile Mechanics, you can avoid the hassle of taking your vehicle to a garage. They can do an alternator repair on your driveway, so you don't even need to leave the house.

All our alternators are OEM standards, that means we only use parts that meet your vehicle manufacturer’s strict quality criteria, ensuring top quality and reliability. With a 12-month guarantee, you can trust our replacement alternators to last. The price includes fitting – no hidden costs. Just friendly, honest experts.

Close up of an RAC Mobile Mechanic underneath a car

Our top pick in Sheffield

We’ll come to you at home or work

RAC Mobile Mechanic in Sheffield

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.

An RAC Mobile Mechanic using a diagnostic machine inspecting a car for an alternator repair.

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

Vehicle diagnostic check

£99

We’ll spend up to 30 mins checking our car’s onboard management system for faults. We’ll talk you through repairs needed and provide a full report. If any further work is needed, we’ll agree this with you before we start. Any additional work after the first 30 minutes will be priced at £20 per 15 minutes. We’ll agree this with you before proceeding.

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.

Average cost of an alternator repair by car make^

The cost to repair your car alternator will depend on the car you drive. According to RAC data, the average cost to repair a car alternator is £458. But you can check out the average price of an alternator repair for your specific car make here.

Make

Average Price

Ford

£435

Volkswagen

£466

Vauxhall

£436

Nissan

£478

Toyota

£417

BMW

£495

Peugeot

£469

Renault

£477

Mercedes-Benz

£525

Citroen

£445

^Average price quoted for RAC Mobile Mechanics from 01/01/25 to 31/03/25.


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

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

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

JCDC AUTOMOTIVE LTD

4.7/5

Thankyou for looking at JCDC Automotive Ltd. We are a Local garage based in Maltby, Rotherham. We are one of few Garages in Rotherham equipped with a 6 ton 2 post lift. This allows us to lift large vans and motorhomes. As well as the commercial side we cater to all makes and models for servicing, repairs and mots. With a small team of highly trained technicians you can be sure you're vehicle will be in safe hands!
Unit B2 Aven Industrial Estate, Maltby, Rotherham, S667QR

Kncustoms LTD

4.1/5

Kncustoms LTD are based in Sheffield offering the best possible service to all our customers from the more basic servicing to the extreme - an engine change. We pride ourselves in offering the best customer satisfactory, and going the extra mile!
Unit 1 And 2 Acers Hill Lane, Acers Hill Lane, Sheffield, S94TY

Mets Garage LTD

3.7/5

Mets Garage is now Dinnington’s first female owned service centre. Mets Garage are devoted to their 62% female customer base and pride themselves on their same day next day service, to keep you on the road. PROUD TO BE A FAMILY BASED, LOCALLY OWNED BUSINESS Mets Garage provides their customers with a clean waiting room that has comfortable seating and FREE to use WI-FI. Mets Garage pride themselves on their same day next day service, to keep you on the road. We are Mets Garage Ltd. Your trusted, independent local garage that packs a punch! Our scope of service is comprehensive and covers (all but) the most niche automotive services. Mainstream coverage are things like: MOT, Service, Brakes, Tyres, Diagnostics, Clutches, Gearboxes and many many more. Our valued master technicians see hundreds of vehicles per year and our expertise is well trusted. Don't take our word for it, read satisfied customer reviews online. Book your appointment today.
Unit 4B Eden Place, Outgang Lane, Sheffield, S253QY

ARN Diagnostics Ltd.

3.0/5

ARN Diagnostics Ltd we have been an established garage in the Doncaster area for 10 years now. Our fully equipped garage offers a wide variety of services. We pride ourselves in excellent customer service. We look forward to hearing from you.
Unit 2, Balby Carr Bank, Doncaster, DN48DE

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 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.