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 Cwmbran

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

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

£431.27

Average price for this repair in Cwmbran 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 Cwmbran

We’ll come to you at home or work

RAC Mobile Mechanic in Cwmbran

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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 your 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 Cwmbran

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

Hillcroft Garage Ltd

Hillcroft Garage Ltd
Hillcroft, Chepstow Road, Newport, NP182JN

Usk Vale Auto Services

Uskvale Auto Services is a car service station in Pontypool. We are an established, professional business with over 30 years experience in the industry. We provide MOTs, performance remapping, DPF Cleaning, diagnostic assessments and general mechanical repairs to cars and lgvs. Our team of experienced professionals are here to help you keep your car on the road and performing at its best. We pride ourselves on our professionalism and attention to detail, ensuring that you receive the highest quality service every time you visit us. If you're looking for a high-quality performance remap or DPF cleaning near Abergavenny, look no further than our team at Uskvale Auto Services. We have years of experience in providing these services, and our team of qualified mechanics will be able to provide you with the best possible service. We understand the importance of getting your car back on the road as soon as possible, and we will always aim to provide a quick and efficient service. In addition, we offer a competitive pricing structure, meaning that you can be sure you're getting the best possible value for money.
Unit 10 Rockhill Road, New Inn, Pontypool, NP48AN

GKT MOT Centre

Welcome to GKT MOT Centre – Your local MOT testing station serving Pontllanfraith, Blackwood and local surrounding villages. At GKT MOT Centre, we have the expertise and knowledge to not only provide MOT testing in Blackwood but also, vehicle servicing, repairs, tyres and so much more! At our MOT garage, we understand how important having a reliable vehicle is for your daily life. That’s why we provide high-quality MOT testing, servicing and repairs to keep your car in excellent running condition. Our experienced, friendly technicians are committed to providing outstanding customer service and workmanship. We aim to make your experience with us as convenient and stress-free as possible.
Gkt Mot Centre, Gilwern Yard, Newbridge Road, Pontllanfraith. Blackwood., NP122AX

Bryngwyn Service Station

Bryngwyn Service station are a family run business, established in 1972, who are proud to offer our customers a friendly and high quality service. As a part of the Good Garage Scheme, Autofirst , and RAC networks you can rest assured you will be getting a service of the highest standard. We are also a vehicle dealer, so if you’re looking for a reputable dealer in the area then you’ve come to the right place. Our service centre is open six days a week and you are always welcome to pop in to see us at any time with a query. We know how important it is to have your car maintained and repaired in a thorough yet efficient and affordable way, so our expert technicians strive to ensure customer satisfaction on every job. Please check out our website for further information and do not hesitate to contact our friendly staff to make an enquiry about any of our services.
Fleur De Lys, Blackwood, NP12 3RZ

Cardiff MOT Centre

Are you looking for a friendly, family-run independent garage dedicated to the drivers of Cardiff, then you’ve come to the right place. We have over forty years’ experience in the motoring industry and are committed to delivering quality repair work at the most affordable prices. We are proud to offer a wide range of dealership-standard services at much more affordable prices. So, if your vehicle needs an MOT test or service, a diagnostic test, tyre repairs or replacements, brake inspections or a general repair, book an appointment with Cardiff MOT & Service Centre today.
13 Ipswich Road, Cardiff, CF239AQ

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.