Do I have to service at a main dealer to keep my warranty?

The short answer

You are free to have your car serviced at an independent garage during the manufacturer's warranty period. A manufacturer cannot refuse to honour your warranty simply because routine servicing was done somewhere other than one of its dealers.

The condition is that the servicing is done properly: following the manufacturer's service schedule, using parts and fluids of matching quality, and recording the work. If those are in place, an independent service is treated the same as a dealer service for warranty purposes.

Where the rule comes from

For many years, competition rules that originally came from the EU, known as block exemption, set out how car makers could and could not restrict servicing and repair. The aim was to stop manufacturers tying owners to their own dealer networks and to keep the market for servicing open to independent garages.

After Brexit, the UK put its own version in place. The Competition and Markets Authority's guidance on the Motor Vehicle Block Exemption Order makes the same broad point: making a warranty conditional on servicing only at authorised dealers is the kind of restriction the rules are designed to prevent. If you want the detail, the CMA publishes its guidance on GOV.UK.

What the garage has to do

For your independent service to protect your warranty, the garage should:

• Follow the manufacturer's service schedule for your car's age and mileage, including the items that are due at that particular service, not just an oil change.
• Use parts of matching quality. That means original parts or parts of equivalent quality, plus oils and fluids that meet the manufacturer's specification for your engine.
• Record the work properly: a dated invoice listing what was done and what was fitted, and an update to your service history, whether that is a stamped book or a digital record.

At Drive Dynamics we service to the manufacturer's schedule using manufacturer-spec parts and fluids, and we record the work, so your history stays complete.

What still goes back to the dealer

There are two things that are still the dealer's job. First, repairs covered by the warranty itself. If a part fails and the manufacturer is paying to fix it, that work is done by the dealer network. Second, safety recalls. These are free and carried out by dealers, and an independent garage can check whether your car has outstanding recalls but cannot carry them out under the manufacturer's recall.

Neither of these stops you using an independent garage for your routine servicing. Plenty of owners have servicing done independently and visit the dealer only for the occasional warranty repair or recall.

What can affect a warranty

Missing services, using the wrong oil or fluids, fitting poor-quality parts, or making modifications are the sorts of things that can give a manufacturer grounds to question a claim. Modifications include engine remapping. A remap is not routine servicing, so the protection described above does not cover it, and it may affect your warranty.

If you are ever told a warranty claim is being refused because of where your car was serviced, ask for the reason in writing and keep your service invoices to hand.

What to keep

Keep every service invoice, not just the stamp. The invoice is your evidence of what was done and what was fitted. If your car uses a digital service record, ask the garage to confirm it has been updated. A complete, well-documented history also helps when you come to sell.