Find a Mobile Mechanic or Garage in Hertfordshire for Alternator Repair & Replacements
Top garages & mobile mechanics for Alternator Repair & Replacements in Hertfordshire
428 Reviews
Mobile mechanic in Hertfordshire, 12 years of experience
We can carry out all types of repairs no jobs too big or too small
23 Reviews
Mobile mechanic in Hertfordshire, 19 years of experience
With over 19 years in the motor industry, I have gained great experience and training within a wide range of leading automotive brands including Renault, Nissan, Jaguar, Land Rover, and specialised with Merc...
HUSEYIN, CHOOSE... • 25th July 2026
Toyota Corolla • Alternator replacement
37 Reviews
Mobile mechanic in Hertfordshire, 10 years of experience
Experienced skilled mechanic with 10 years of hands-on experience working on cars and vans. Specialised in diagnostics, servicing, repairs, and maintenance across a wide range of vehicles. Experienced with m...
PAUL, England • 7th July 2026
Ford Transit Connect • Alternator replacement
73 Reviews
Garage in Hertfordshire, 5 years of experience
Mechanic – Universal Clutches, Luton Experienced in a wide range of vehicle repairs, including timing systems, turbos, brakes, and clutches. Flexible and reliable, willing to take on any job needed to keep ...
31 Reviews
Garage in Hertfordshire, 10 years of experience
Tyres, Servicing, Clutches, Cam Belts, Brake Pads, Exhausts, Wheel Alignment. 10 Years of experience.
STUART, LETCHWORTH • 5th April 2026
Renault Trafic • Alternator replacement
38 Reviews
Garage in Hertfordshire, 10 years of experience
Hardi’s BodyWorks has extensive experience in car body repair and mechanic . We offer a large array of services at competitive prices, from a minor ding or dent to a complete restoration of a classic. to mec...
CHRISTOPHER, CRANFIELD • 1st April 2026
625 Reviews
Garage in Hertfordshire, 15 years of experience
I have been interested in the car repair industry for almost my entire life. The first few years were spent learning the trade and I went to college to study it properly. I worked at a garage as a BMW specia...
JO-ANN, HENDON • 10th January 2026
MINI Mini Paceman • Alternator replacement
272 Reviews
Garage in Hertfordshire, 8 years of experience
As a dedicated mechanic, I take immense pride in my work, knowing that every repair and every adjustment I perform keeps vehicles running smoothly and safely. My hands are skilled, my mind is sharp, and my p...
KATIE, MILTON KEYNES • 22nd December 2025
Nissan X-Trail • Alternator replacement
806 Reviews
Mobile mechanic in Hertfordshire, 9 years of experience
3 years at AVS where I started my mechanics as an apprentice, mastering general repairs and servicing on a wide range of vehicles , 2 years as a fast fitter in car giant. Perfecting replacing brakes, tyres ...
JONATHAN, Berkhamsted • 29th September 2025
Skoda Fabia • Alternator replacement
100 Reviews
Garage in Hertfordshire, 20 years of experience
We are a professional automotive service company with over 20 years of experience in the industry. Our qualified mechanics are passionate about delivering high-quality car repairs and exceptional customer se...
120 Reviews
Garage in Hertfordshire, 15 years of experience
We take on all types of mechanical work along with mot tyre change servicing etc. we also will offer a recovery service where your vehiacle can be collected from your door and dropped off.
ANGELA, Essex • 28th November 2024
Mercedes-Benz A-Class • Alternator replacement
44 Reviews
Garage in Hertfordshire, 10 years of experience
Mobile and garage-based mechanic covering the Hemel Hampstead area. Fully qualified with all the relevant diagnostics machines.we provided a pick up and drop off vehicle service whit our tow truck So if ...
JOHN, HEMEL HEMPSTEAD • 13th August 2024
Peugeot 3008 Crossover • Alternator replacement
29 Reviews
Garage in Hertfordshire, 35 years of experience
At Compass-Twenty we understand that our clients expect a high level of service, quality and transparency and we set ourselves and our staff high expectations to meet each of our clients needs.
ANTHONY, HEMEL HEMPSTEAD • 13th July 2024
Jaguar X-TYPE • Alternator replacement
9 Reviews
Mobile mechanic in Hertfordshire, 22 years of experience
I started out in the Automotive world when i was 17 as an apprentice for BMW, I stayed with them for 10 years. I then decided to expand my skillset to work on HGV and Buses for the likes of Metroline Trave...
GRAHAM, RADLETT • 23rd May 2024
Volkswagen Tiguan • Alternator replacement
131 Reviews
Garage in Hertfordshire, 11 years of experience
BACK ON ROAD LTD offers a variety services on high quality standards, in no time such as: Electric and hybrid vehicles Diagnostics Coding Programming Brakes Exhaust Mechanical Electrics Upgrades ...
STEPHEN, HEMAL HEMPSTEAP • 1st May 2024
Land Rover Discovery 3 • Alternator replacement
Frequently asked questions about alternator repair & replacements in Hertfordshire
Read our answers to questions about alternator repair costs, symptoms and more.
What does an alternator replacement in Hertfordshire 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 Hertfordshire garages offer home collection and delivery for alternator repair?
Yes, many garages in Hertfordshire 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 Hertfordshire.
Can Hertfordshire mobile mechanics do alternator repair at my home or office?
Yes, Hertfordshire 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.
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Mechanics in and around Hertfordshire
- Bracey’s Motors Limited, Hitchin
- Bridge Motors Mobile Repairs, Stevenage
- Chester Auto Exclusive, Hertford
- Collect Service Go, Welwyn Garden City
- Compass Twenty Ltd, Harpenden
- Complete Care, Welwyn Garden City
- Ggf Autos, Stevenage
- Greasy Gorillas Garage, Potters Bar
- Gsw Auto Repair And Tyre Services, Welwyn Garden City
- Herts Fleet Care Ltd, Welwyn Garden City
- Jason Wilks, Stevenage
- Jenkins Mechanics, Stevenage
- L S AUTOS SERVICE DIAGNOSTIC AND REPAIRS LIMITED, Panshanger
- LA Auto Care Center, Potters Bar
- MARK AND SONS MOBILE MECHANICS LTD, Hitchin
- Mtronix Ltd, Welwyn Garden City
- NSG AUTOS, Hertfordshire
- QWIKTYRES STEVENAGE LIMITED, Stevenage
- Rayment’s Mobile Auto Services, Stevenage
- Recoveryoo Ltd, Potters Bar
- S.A REMAPPING & PERFORMANCE LTD, Stevenage
- SM MOBILE MECHANIC, Hertford
- ST ALBANS TYRES LTD, London Colney
- Speedy Spanner Ltd, Stevenage
- Spinfix Tyres & Auto Services, Welwyn Garden City
- Steve Hill, Stevenage
- TGPP AUTOCARE, Stevenage
- Trusty Spanners, Stevenage
- Vitor Pegorin, Hatfield
- Wandon End Garage, Hitchin