The answer to this question depends entirely on one thing: Are you trading the vehicle in on a new car or selling it privately?

If it’s the former, then the trade-in value won’t be too much different regardless of whether it’s had its 100,000km service or not. Dealerships can service a car for a lot less money than they charge you to do it. But if you’re selling privately, the car will be a lot more attractive to a private buyer if the cost of this major service has already been taken care of.

The trade recommends a fully synthetic oil for either the diesel or petrol engines of the Golf Mk 7. The correct grade and specification is 5W30 which will give you maximum engine protection and performance.

The other engine-oil recommendation for this car is to not skimp on checking the oil level with the dipstick. These engines – in particular the 2.0-litre petrol unit – are designed to sip a little oil between changes, so don't be caught out with too little oil in the sump as that can cause catastrophic damage to the engine. The engine does this because it's a low-friction design, but the small amount of oil you'll use will be more than offset by the fuel savings engines designs like this can deliver.

Make it a habit to check the oil level every Saturday morning; it's a simple thing to do and something that we all once had to do in the old days when most engines burned a little oil.

Your recommended tyre pressures can vary a bit depending on what size wheel and tyre combination is fitted to your car. But broadly speaking, you should be looking at something like 30 or 32 psi front and rear as a good starting point. If you're moving heavy loads or driving at freeway speeds in mid-summer, a little more inflation pressure might be a good idea.

As for recommended fuel, the best advice would be to stop using ethanol-blended (E10) fuel right away. That's because there's a fair bit of confusion on the subject as it relates to Volkswagen models. The Federal Chamber of Automotive Industries tells us that all post-1986 VWs with fuel-injected engines are fine with E10. The NSW government website, however, says that E10 should not be used in VWs. Some VW owners have also been told by VW head office that E10 fuel is not suitable for their cars.

So it's confusing, but if in doubt, stick with the safe option which, for your car, would be non-ethanol fuel with an octane rating of 95 or more.