Book Alternator repair & replacement in Portsmouth

Get a fair price & compare in seconds, garages and mechanics you can trust, next-day service at your door.

149000+
Customer Reviews
4.8

Up to 50% cheaper than franchise dealers

Instant fixed price quotes
(no hidden estimates)

Fully vetted & qualified mechanics

1 year parts & repairs warranty

Next day bookings at your home or office

Get your car repaired at your home or office

Expert Local Mechanics

66

Total expert alternator repair mechanics operating in Portsmouth

Number of Ratings

244

Total number of alternator repair reviews in Portsmouth

Average Rating

Average user rating for alternator repair bookings in Portsmouth

Top Mechanics For Alternator Repair & Replacements in Portsmouth

118 Reviews

Garage in Portsmouth, 21 years of experience

Over the years I have worked in various garages, carrying out mechanical repairs, including, servicing, general repairs, mot repair, cambelts/timing chains, clutches, head gaskets, engine replacements etc I ...

56 Reviews

Garage in Portsmouth, 20 years of experience

With over 25 years of experience, Enterprise MOT’s provides high quality service and peace of mind for all your vehicle repairs, maintenance, and testing needs. Based centrally in Paulsgrove, Portsmouth w...

32 Reviews

Garage in Portsmouth, years of experience

Based in Portsmouth we have 2 units 1 offering full mechanical and servicing and the other offering in house custom ecu remapping , we have a 4ton lift in unit 6 and a 1500bhp rolling road in unit 7 , we are...

64 Reviews

Garage in Portsmouth, 11 years of experience

I completed my apprenticeship in Hungary before moving to the UK in 2004. I am fully qualified up to ATA Level 4. Prior to owning my own premises I worked as a mobile mechanic for 7 years before setting up m...

184 Reviews

Garage serving Portsmouth, 15 years of experience

Three years' work experience within a family run garage and 13 years' work experience as a freelance Mobile Mechanic in Fareham and surrounding areas.

78 Reviews

Mobile mechanic serving Portsmouth, 26 years of experience

My work experience includes main dealer and multi franchise garages and also roadside patrol man for the RAC. I am now providing a fully mobile mechanical service including minor and major repairs , servicin...

575 Reviews

Garage serving Portsmouth, 13 years of experience

Joseph Bloomfield Mobile Mechanic. The business covers all makes/models & repairs, so no job is too big or too small. I cover the South Coast area & beyond.

78 Reviews

Garage serving Portsmouth, 14 years of experience

Here at CK Automotive Specialist I will maintain or modify your vehicle as if it was my own vehicle. I use the best tools and diagnostic equipment there is available. I have a vast amount of experience on al...

103 Reviews

Mobile mechanic serving Portsmouth, 15 years of experience

Over 15 years experience in the motor trade industry, working in independent garages.

83 Reviews

Garage serving Portsmouth, 16 years of experience

A friendly and personal service for your automotive needs. MOT’s Servicing Repairs Diagnostics Recovery Mobile and Workshop facilities.

292 Reviews

Garage serving Portsmouth, 53 years of experience

The Company’s Roadside Assistance brand is now the preferred choice for the South of England and has become synonymous with efficiency, punctuality and courtesy resulting in all the major motoring organisati...

117 Reviews

Garage serving Portsmouth, 13 years of experience

Antony - Mechanic for 13 years - MOT tester - Main dealership certificated As a master technician - Trained in technical diagnostic equipment. And electrical diagnostics Our aim is to give you the best...

27 Reviews

Mobile mechanic serving Portsmouth, 8 years of experience

Rapid Auto Services Ltd provides comprehensive automotive repair and maintenance solutions. Their expert mechanics offer services including routine oil changes, brake repairs, engine diagnostics, transmiss...

97 Reviews

Garage serving Portsmouth, 8 years of experience

Mobile mechanic service with 8 years workshop experience. Friendly, polite and knowledgeable in all work carried out. All aspects of work carried out from pre-MOT to clutch and cambelt replacement.

301 Reviews

Garage serving Portsmouth, 8 years of experience

Welcome to AIC Maintenance Group - We Offer a Specialist Mobile Mechanic Service at your home or work place throughout West Sussex, Hampshire & Surrey Are you looking for a professional car mechanic who can...

Frequently asked questions about alternator repair & replacements in Portsmouth

Read our answers to questions about alternator repair costs, symptoms and more.

What does an alternator replacement in Portsmouth 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.

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.

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.

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.

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.

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.

Can Portsmouth garages offer home collection and delivery for alternator repair?

Yes, many garages in Portsmouth are able to offer collection and delivery for an alternator repair. With ClickMechanic collection & delivery is free if your vehicle is drivable. Once booked a mechanic will pick up the vehicle on the day and time of your choice, do the work, and return the vehicle at a time convenient to you. Simply enter your vehicle registration number and postcode to get an upfront price for a alternator repair in Portsmouth.

Can Portsmouth mobile mechanics do alternator repair at my home or office?

Yes, Portsmouth mobile mechanics can do an alternator repair at your home or office, provided there is a safe and sufficient space to conduct the repair or replacement. With ClickMechanic, once booked for a date and time of your choice, your booking will be offered to vetted mobile mechanics in your area.

How much does an alternator repair cost in Portsmouth?

The average cost of an alternator repair in Portsmouth varies between £283 and £361, depending on your car's make and model. See the averages for different makes below. We consolidate industry standard data with millions of data points to give you the most accurate price.

These estimates may include Alternator.

Estimates on average repair costs, such as the above results for an alternator repair, are based on ClickMechanic's quote data which combines multiple third-party sources. Actual costs may vary. We provide estimates on average 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.

Book a trusted mechanic today

Get an instant quote, then book a vetted mechanic to fix your car at your home or office.

  • Vetted mechanics
  • Save up to 50%
  • Fast online booking

Book repairs for hundreds of makes and faults