Book an Alternator Repair in Chelmsford

£439.66

Average price for this repair in Chelmsford 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 Chelmsford

We’ll come to you at home or work

RAC Mobile Mechanic in Chelmsford

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.

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.

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.

Diagnostic check

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

Full error report and advice on repairs

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 Chelmsford

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

BB Motors Solution Ltd T/A Platinum Motor Solutions

4.8/5

Established in 2008 with over 7 years of experience, Platinum Motors is a well-known, locally run business based in Romford. We pride ourselves on providing an honest and reliable service throughout the local area. At Platinum Motoring Solutions we are a small team of qualified and experienced mechanics offering a complete range of garage services. We undertake all car servicing and provide quality MOT testing and repairs as well as computer Diagnostics for all make and models As testament to the high standard of service and workmanship that we provide, we maintain many repeat customers and are highly recommended across the local Romford and Gidea park area. Want to find out if we can help you? Are you looking for a free estimate? Please feel free to contact us today.

376-392, Brentwood Road, Romford, RM25TD

A&R Motors Engineering Ltd

4.7/5

A&R Motors, Canvey's favourite workshop for full car servicing, brakes & clutch, suspension, engine repairs & tuning, exhaust fitting, welding and classic car restoration. Family owned and established for 35 years, we are possibly the longest running workshop in Canvey Island. We are not part of any franchise or chain, just a local garage with honest mechanics you can trust. Your safety is our key objective and our value for money service ensures you hassle free motoring at an affordable cost. We offer a full range of great value services for all types of car and van from personal vehicles to commercial fleets. We also cater for classic vehicles with vast experience in classic Volkswagen, Audi, Porsche and most American Cars.

11 Kings Close, Charfleet Industrial Estate, Canvey Island, SS80QZ

Eastern Garage

4.7/5

Eastern Garage is your local independent garage that has been established since 1950. We have been serving the local community for over 60 years and hope to do so for many more years to come. The current owner, Martin Sheath, took over in 1989 and runs a team of 10 employees. Our technicians have over 60 years of combined experience with all makes and models of vehicles. By choosing us to repair your vehicle, you can be assured that your vehicle will receive the care and attention it needs and deserves. We are able to carry out all repairs in line with manufacturers recommendations.

Wethersfield Road, Essex, CM7 4NT

Inverness Garage

4.3/5

We are a family run business in its second generation. Inverness Garage opened in 1970 and are a large independent garage operating in the centre of town, close to bus routes and train stations located near Southend and Leigh on Sea. We have been AA garage of the year (south east) three times. We pride ourselves on being an honest, friendly and very professional garage. We offer a full spectrum of garage services in Westcliff on Sea, from MOT’s and Servicing to the latest electronic diagnostics, car air conditioning services and good old-fashioned welding. There is little we can't do in-house, our expert technicians deliver exceptional customer service and expertise with an extensive network of specialised service partners we provide a one stop for all your motoring needs, all work carried out will be covered by our comprehensive warranty here at Inverness Garage in Westcliff on Sea. Should you require it we offer collection and delivery services as well as two loan cars should you need one whilst your vehicle is with us. If you prefer to wait while we work on your vehicle we have a comfortable waiting room for you to use. So sit back and rest assured your vehicle will be in expert hands at Inverness Garage.

Inverness Avenue, Westcliff-On-Sea, SS09DY

Harris and box vehicle solutions ltd

3.7/5

Harris and Box Vehicle Solutions Ltd is an independent workshop based in Witham. We provide the highest level of service across our expertise and never hesitate to go the extra mile for the satisfaction of our clients. Whether it is a major issue or a minor inconvenience, we will make sure that your car is ready to set off as soon as possible. We cover Witham and the surrounding Essex, Suffolk and Hertfordshire areas. We possess over 25 years of experience in the motor industry, working at main dealers and fast fits. We are also AA approved. Our professional mechanics can solve any issue that you are experiencing with your car with excellent workmanship and care. We never include any unnecessary repairs or hidden extras. So, when your car needs any repairs or periodic maintenance, you can rest assured that it is in safe hands with Harris and Box Vehicle Solutions Ltd.

36, Witham, CM83TH

Frequently asked questions about car alternator repairs

Can I drive my car with a bad alternator?

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.

What happens when the alternator stops working?

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.

What is alternator reconditioning?

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.

How much does an alternator cost?

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.

Can an alternator be repaired?

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.

Is it worth replacing an alternator?

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.

How often should an alternator be replaced?

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.

Does an alternator repair or replacement fall under warranty?

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.

Is an alternator repair or replacement covered by insurance?

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.

When do I need an alternator replacement?

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.