Book an Alternator Repair for your Subaru

£430.60

Average price for this repair for your Subaru 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.

RAC Mobile Mechanics can carry out alternator repair on popular Subaru models such as Outback, Forester, XV, Impreza, and Crosstrek. This service is completed at your home or workplace, following Subaru maintenance guidance and using OEM‑equivalent parts. You get clear pricing, real‑time updates and a convenient, no‑hassle experience.

Close up of an RAC Mobile Mechanic underneath a car

Our top pick for your Subaru

We’ll come to you at home or work

RAC Mobile Mechanic

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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.

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 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.

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.

And it’s not just alternator repairs we can do for your Subaru

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

Certified Repair Centre Ltd.

5.0/5

Certified Repair Centre Ltd. – Multi‑Award Winning Garage Excellence At Certified Repair Centre Ltd., we set the benchmark for independent garages in the UK. Proud winners of the 2025 Best Garage Award in the West Midlands, we are recognized for our technical precision, customer-first approach, and consistent delivery of outstanding results. We are trusted members of the RAC, Assurant, Cazoo, and Close Brothers approved garage networks, and are warranty-approved repairers for leading providers. Our reputation is built on transparency, integrity, and advanced expertise, making us the go-to choice for both customers and warranty partners. Every vehicle we service undergoes thorough diagnostics, no matter how big or small the job. Using specialist tools and cutting-edge technology, we can diagnose and resolve even the most complex issues. Our goal is always to provide long-term, cost-effective solutions tailored to each customer’s needs. Our personalized programming services are in such high demand that they are used by service garages across the UK, further establishing us as a trusted technical authority. Our Specialisms Warranty Repairs Timing Chains & Belts ECU Programming DPF / EGR / AdBlue Solutions Maintenance & Servicing Engine Rebuilds & Upgrades Brake Repairs & Replacements Clutch Repairs & Replacements Suspension & Steering Systems Gearbox Diagnostics & Repairs Battery & Charging Systems Air Conditioning Servicing & Repairs Exhaust Systems Electrical Fault Diagnosis Achievements & Recognition: Winners of the 2025 Best Garage Award in the West Midlands. Consistently rated 5 stars on FixMyCar, with recognition as a regional top performer. Multi-award nominations for excellence in customer service and technical expertise. Trusted by national warranty providers and service networks. We are proud to offer exclusive diagnostic and software solutions that are not available elsewhere, setting us apart as a true industry leader. Please Note: While we do not currently offer MOTs in-house, we can arrange appointments at trusted local garages at competitive rates.

Unit 26 Downs Road, Willenhall, WV132PY

A2B Autocentre

4.5/5

A2B Autocentre of London are a friendly and honest independent garage dedicated to providing sensational service to you and your vehicle. We are here to build solid and trusting customer relationships based on providing a truly excellent service with great value. We want to prove to you that we will go the ‘Extra Mile’ to gain your custom and, more importantly, retain it. As a proud member of the RAC Approved Garage Network our mission is to always provide you with the highest quality of auto repair and exceptional customer service. Our skilled team of highly qualified motor engineers will always get you back on the road as quickly and efficiently as possible. Please feel free to call us, email or pop in for a chat about any of your motoring needs.

95-103 Upminster Road South, Rainham, RM139AA

Kissane and Jeffries (Recovery Services) Ltd

5.0/5

Kissane and Jeffries are a well established rescue and recovery company operating in the West Midlands and have been in the trade for over 30 years with proven ability to carry out a professional and competent service. We are constantly upgrading our fleet of breakdown and recovery vehicles and equipment to keep up with today's demands for the best in the business to ensure we can serve you as quickly as possible when needed. We also have comprehensive vehicle repair facilities available for most makes and models with very competitive pricing structures and a quality of service that will make you want to use us again and again, our technicians are ATA accredited and our workshops are registered to the BSi PAS 80 Standard. Customer satisfaction is our priority and we are focused on delivering a quality service whether it be as a one off job for an individual customer or one of the many jobs we carry out some of our blue chip clients, each and every customer is treated with the same high level of care, this is demonstrated with our commitment to the standards of ISO 9001 and PAS43.

Station Road, Rowley Regis, Warley, B65 0JY

JOHN HARRISON LOWDHAM LIMITED, Bosch Car Service

4.6/5

Welcome to John Harrison (Lowdham) Ltd - we're a family run business having been established at the same location since 1946, later being the first established Peugeot dealership in the country in 1975. We pride ourselves in customer care, with many awards over the years gained through offering the very best in customer service experiences from buying a vehicle in the sales department through to our aftersales. We thrive on repeat business, with industry leading preparation standards alongside our non-pressurised sales environment enjoyed by our customers over the last 70 years. We provide the complete range of new Peugeot's from cars through to vans, alongside a superb range of 70+ multi franchise used vehicles. Our team will take the stress out of buying a new car. All you have to do is choose the one that best suits you. Then, the team will help you select the best finance package, organise the admin and get any maintenance taken care of. If you have any questions along the way, we will be more than happy to help. We also extensive aftersales facilities with 'All Makes' Servicing, MOT's, Four Wheel Alignment and more alongside our in-house bodyshop offering minor repairs through to full body resprays.

Southwell Road, Lowdham, Nottingham, NG147DS

Norwich Autoworks LTD,

4.5/5

We are based on Twickenham Road Norwich, NR6 6NG Near Norwich Airport. We cover all makes and models of cars, light commercial vehicles and motorhomes. From MOT Testing, Air Conditioning, Servicing, Repairs, Welding, Wheel Alignment, Tyres, Diagnostic Vehicle inspections and much more. We are a full class 4 & 7 MOT Test station for all makes and models of cars & light commercial vehicles up to 3500Kg. We are also Norwich's only independent Nissan Specialist garage. We are also registered with Payment Assist to be able to offer 0% Finance options to customers who wish to spread the cost of vehicle repairs should they need to.

6 Twickenham Road, Norwich, NR66NG

Frequently asked questions about car alternator

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.