Does having servicing done by an independent garage void your warranty?

Can you please tell me what the actual position is if your car is under warranty and something has gone wrong but your servicing has been carried out by a non-franchised Garage.
If you cannot prove that the servicing has been carried out precisely to manufacturer requirements using the specified lubricants and parts, then the warranty will be null and void, just as it would be if you had issued it on a complex piece of machinery and electronics that you had made and sold. Independents get round this by very precise and detailed invoicing that provides this proof.
Answered by Honest John on

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