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150+

Total expert alternator repair mechanics operating in London

Number of Ratings

579

Total number of alternator repair reviews in London

Average Rating

Average user rating for alternator repair bookings in London

Recent Alternator Repair Mechanic Reviews in London


27 Reviews

Zb Cars

Garage in London, 10 years of experience

I Zaki Bahar have over 10 years of experience in motor industry. I have qualified professionals working in my team to provide quality service. Personally I'm always in contact with my clients during pick and...



607 Reviews

M PRO DIAGNOSTICS

Garage in London, 30 years of experience

Hi, I’ve been a mechanic since leaving school and have owned and operated my own garage since I was 25 , were you could that I’ve done most jobs on a wide range of vehicles. I’d like to say that my workmans...



221 Reviews

Stoyanoski Igor

Garage in London, 10 years of experience

Pit Start is the only garage in the UK that carries out all repairs and servicing in full public view. You are allowed to go into the work area and inspect the work while it’s being carried out by our profes...



33 Reviews

Mobile Service Station

Mobile mechanic in London, 20 years of experience

I have been in the industry for 20 years. Some of the services I offer include MOT failures, brakes, suspension, clutches, cambelt replacement, diagnostics, ABS, airbags. I take pride in my work and customer...



6 Reviews

Prestige A+ Repair Ltd

Garage in London, 10 years of experience

Hello, I started working in the motor trade at age 16 in the Caribbean in a small independent garage. When I finished school, I worked for a company by the name of QRG Ltd- Quality Repair Garage. I worked a...


12th June 2022

KAREN, London

Mercedes-Benz A-Class • Premium Pre-purchase Inspection


241 Reviews

Bwp Autos

Mobile mechanic in London, 12 years of experience

I'm a fully qualified mechanic in a family ran business with the top of the range equipment and knowledge with over 12 years experience, I cover all makes and models over a 30 miles radius



500 Reviews

Onsite Autos

Mobile mechanic in London, 11 years of experience

Shahid is very passionate about mechanics and is keen to deliver the best service possible. He was brought into the mechanics world by his father, whom owed his own garage. After completing his qualificat...


15th April 2017

COLIN, Isleworth

Kia Sportage • Plug-in Diagnostic Inspection


336 Reviews

Roadside Mobile Mechanics Ltd

Mobile mechanic in London, 20 years of experience

Roadside Mobile Mechanics was set-up in 2018 as a new business by owner Joe Turley. Prior to this business, Joe has over 20 years mechanical experience working in both independent & main dealer garages as we...


12th October 2021

VICTORIA, London

Vauxhall Astra • Alternator replacement


767 Reviews

Want to learn more about Alternator repairs in London?

Read our short guide with information on costs, symptoms and more.

What does an alternator do?

The alternator is an electrical generator driven by a belt off the engine to charge the battery of the car. It is vital that the alternator works effectively, seeing that the battery provides electricity to a range of components.

What does an alternator replacement involve?

  • Mechanic will inspect the car's battery charging system.
  • Mechanic will inspect the alternator's ancillaries (drive belt, cables etc.)
  • Mechanic will test the voltage output of the alternator.
  • If necessary, the mechanic will replace the alternator.
  • Mechanic will advise if any other parts of the electric system need to be replaced.
  • Mechanic will test the charging system and will test drive the car.

Can I replace my alternator myself?

Unless you are a qualified mechanic with the required skills, training and equipment to do the job, we strongly recommend an alternator replacement is only carried out by a professional mechanic. ClickMechanic can help get you a vetted and local mechanic to carry out the work. Just enter your postcode and your car's registration number at the top of this page and select the work needed to get an instant fixed price up front.

What are the symptoms of a bad alternator?

  • When the battery warning light on the car's dashboard has lit up.
  • When the battery is not being recharged

How long does it take a mechanic to replace an alternator?

On average, alternator replacement times can range from 1 hour to 2.5 hours with an average of just over 1 hour. The time that the job takes will depend on a number of factors, like your vehicle's make and model, year, as well as other factors. Select your car at the top of this page for information on job time and cost for your vehicle through ClickMechanic.

How often should I replace an AC Condensor?

Generally alternators only need to be replaced if there is an issue with them. Should you experience any problems like those listed it is important to have the battery charging system inspected and, if necessary, have the alternator replaced.

As the demand for more and more electrical equipment and devices on modern vehicles increases, the demand on the alternator is increased. Therefore whilst the units themselves have improved dramatically in design and reliability, this is outweighed by the increased reliance on it. So, alternator replacement is a frequent repair on most vehicles at some point.

What are the signs of a bad alternator?

If the battery light remains on with the ignition (and does not go out once the charging is in operation), or comes on with the engine running then there is an issue with the alternator generating power and the battery will not be recharged. It is important to get a professional mechanic to check the issue as soon as possible.

How can I extend the lifetime of my alternator?

Because it is not possible to turn the alternator off and it will therefore always be turning when the engine is running, there is little you can do to prevent wear and tear. Obviously as an electrical device, they do not like water, so avoiding flooding is important!

Can you drive with a bad alternator?

If you have a bad alternator then technically your car will likely still drive, but it is advisable to get help from a professional mechanic before running the vehicle again. Not addressing issues with the alternator will lead to your battery not getting charged and a flat battery, ultimately leading to your vehicle not being able to start again.

Should you replace battery with alternator?

Whether you will need to replace the battery with the alternator ultimately depends on the battery's condition. If you're not sure if it needs replacing we'd recommend booking with a professional mechanic to check the issue and advise on next steps.

How long will a battery last with a bad alternator?

There are a number of factors that would determine how long a battery would last if the alternator is bad and not charging it correctly. Primarily it will depend on how much energy your car consumes and the condition of the battery.

Is a faulty alternator an MOT failure?

No, a car will not fail its MOT on an alternator issue itself. The alternator is not checked as part of the MOT, but a garage may flag it as something to address outside of an MOT to help ensure your vehicle will be able to charge its battery as intended.

Can a bad or faulty alternator affect a new battery?

A bad alternator can damage a new battery if the battery is not receiving the proper charging voltage. While it may not completely destroy it, a faulty alternator can cause a new battery to drain more quickly than it should.

Can a car work without an alternator?

It is possible for a car to run without an alternator, but it will not run for very long. It is likely that the battery will eventually die, and the car will eventually come to a halt.

Can an alternator fail suddenly?

Alternators can fail suddenly, but more often than not they will slowly lose their ability to charge the battery and eventually die. So even if it fails while driving, you may still be able to drive the car a few miles before the car comes to a complete stop.

How do I check if my car alternator is working properly?

The easiest way to check if your alternator is working is to start the car and let it idle. Then, turn on all of the car's accessories one at a time. If the car's battery dies while the accessories are on, then the alternator is not working.

Additionally, the battery should be tested for voltage. If the battery is low, the alternator may not be charging the battery. Depending on the electrical system, a voltmeter reading in the 13.8 to 15.3 volt range with the engine running, lights and accessories off, generally indicates that the alternator is working as it should be.

Can I jumpstart a car with a bad or faulty alternator?

If the battery is not dead, then yes, you can jumpstart a car with a bad alternator, but it will only run for a short period of time before the battery is drained again.

What happens when the car alternator fails while I am driving?

If your alternator dies while driving, your car will eventually lose power and come to a stop. You may notice the first signs of a dying alternator with dimmed interior lights and warning lights on the dashboard. The best thing to do in this case is find a safe place to stop and call for professional help.

How do I fix a bad alternator?

In most cases the alternator would be replaced if it bad or faulty. Alternators can be refurbished but often getting a new one fitted is more cost-effective. An alternator is an electrical component that is key to supplying power to your car so fixing it is a job best left to qualified technicians.

How much does a Alternator repair cost in London?

The average cost of a Alternator repair in London is on average between £327 and £409. Ultimately the cost for a Alternator repair in London depends on the make and model of your car. Check out the ClickMechanic price below, and find out what you'd pay at a franchise dealer in London. We use industry standard data & millions of data points so you know what you should be paying.

These estimates may include Alternator. We have quotes for the top 57 manufacturers.

Name ClickMechanic Click Mechanic average Franchise dealer estimate

Alfa Romeo

£349 £348 - £716 Get exact price

Audi

£385 £371 - £718 Get exact price

Austin

£196 £230 - £331 Get exact price

Bentley

£504 £546 - £841 Get exact price

BMW

£449 £422 - £794 Get exact price

Cadillac

£330 £386 - £561 Get exact price

Chevrolet

£300 £297 - £570 Get exact price

Chrysler

£468 £468 - £884 Get exact price

Citroen

£360 £356 - £684 Get exact price

Dacia

£286 £345 - £516 Get exact price

Daewoo

£289 £321 - £492 Get exact price

Daihatsu

£260 £251 - £492 Get exact price

Daimler

£342 £425 - £528 Get exact price

Dodge

£452 £424 - £780 Get exact price

DS

£360 £375 - £610 Get exact price

Fiat

£309 £314 - £573 Get exact price

Ford

£327 £345 - £573 Get exact price

Honda

£428 £405 - £789 Get exact price

Hyundai

£368 £372 - £645 Get exact price

Infiniti

£379 £525 - £525 Get exact price

Isuzu

£390 £470 - £611 Get exact price

Iveco

£333 £347 - £545 Get exact price

Jaguar

£422 £420 - £733 Get exact price

Jeep

£454 £418 - £791 Get exact price

Kia

£384 £364 - £678 Get exact price

Land Rover

£420 £444 - £750 Get exact price

LDV

£335 £354 - £550 Get exact price

Lexus

£461 £481 - £750 Get exact price

London Taxi's International

£278 £393 - £393 Get exact price

Lotus

£245 £337 - £369 Get exact price

Maserati

£610 £758 - £853 Get exact price

Mazda

£353 £341 - £619 Get exact price

Mercedes-Benz

£480 £450 - £888 Get exact price

MG

£283 £328 - £498 Get exact price

MINI

£394 £415 - £739 Get exact price

Mitsubishi

£335 £347 - £589 Get exact price

Mitsubishi Fuso

£240 £354 - £354 Get exact price

Nissan

£376 £355 - £692 Get exact price

Perodua

£271 £326 - £445 Get exact price

Peugeot

£366 £354 - £707 Get exact price

Peugeot Talbot

£254 £298 - £398 Get exact price

Piaggio

£243 £344 - £344 Get exact price

Porsche

£524 £540 - £915 Get exact price

Proton

£372 £284 - £731 Get exact price

Renault

£414 £410 - £816 Get exact price

Rover

£363 £346 - £822 Get exact price

Saab

£376 £409 - £646 Get exact price

SEAT

£340 £341 - £608 Get exact price

Skoda

£353 £350 - £643 Get exact price

Smart

£409 £408 - £764 Get exact price

Ssangyong

£537 £590 - £817 Get exact price

Subaru

£294 £256 - £529 Get exact price

Suzuki

£333 £363 - £555 Get exact price

Toyota

£352 £368 - £630 Get exact price

Vauxhall

£365 £363 - £654 Get exact price

Volkswagen

£373 £369 - £692 Get exact price

Volvo

£350 £370 - £599 Get exact price

Prices could not be created for 24 models. Show ∨

  • Microcar
  • Metrocab
  • Hummer
  • Reva
  • Asia
  • TVR
  • Ferrari
  • Morgan
  • Buick
  • Lamborghini
  • Pontiac
  • Carbodies
  • Moskvich
  • Ford US
  • Aixam
  • FSO
  • Maybach
  • Rolls-Royce
  • Santana
  • Tata
  • Great Wall
  • Aston Martin
  • Lada
  • Lancia

Estimates on repair costs, such as the above results for an alternator repair, are created by combining data from multiple third-party sources. The actual cost of using your local repair providers may be outside of the estimated range. We provide estimates on repair costs for information only and accept no liability for any inaccuracies or errors. If you think an estimate is incorrect, please contact us to let us know.

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Mechanics in and around London

Recent Alternator repair quotes in London

These recent quotes were taken from our quote engine which uses third-party industry standard data on repair times, along with a live parts retailer, and a regional labour rate to build an accurate free quote. We are constantly improving our quote engine, so please let us know if a price seems incorrect.

£269.57

Alternator replacement

Volkswagen Golf
London
£349.84

Alternator replacement

Renault Trafic
London
£339.73

Alternator replacement

Volvo XC60
Edgware
£220.01

Alternator replacement

Vauxhall Corsa
West Hampstead