Depends on whether it's a minor or major service. It could range from needing only oil and filter to new brakes, cambelt. Glow plugs are not replaced at service unless they're defective.

A local mobile mechanic has said ... it’s cheaper if I buy the parts as he adds money on when he gets them. Without wanting to appear totally clueless, what exactly do I need to buy? How much oil? Which filters? Do I need glow plugs?

First, if the car starts and runs correctly you don't need glow plugs, at least as part of a regular service. If starting gets difficult in cold weather, maybe ask that question again.

Other regular service items aren't very expensive. Your service man may add money if he buys them, but if you buy them you may be adding cost while doing so. Plus - if he is any good he may be less likely to get wrong parts, especially oil, as Elekie has said.

Edited by SLO76 on 15/11/2024 at 13:06

A local mobile mechanic has said he’ll service it and it’s cheaper if I buy the parts as he adds money on when he gets them.

If you supply the parts and they subsequently fail, you'll have no comeback against whoever fitted them.

If you let the mechanic supply and fit the parts, then they'll be responsible.

Hi, I have a VW Golf 2007 estate, diesel. A local mobile mechanic has said he’ll service it and it’s cheaper if I buy the parts as he adds money on when he gets them. ? I live rural and don’t work at home. The other garages aren’t an option at the minute.

It sounds like you don't fully understand what parts / servicing is required. It's so easy to get the wrong parts on many cars these days. I wouldn't source the parts as the risk is on you - leave it to the mechanic.