I have just taken delivery of a new Tiguan 1.4 petrol. I know you are a passionate advocate of Shell V Power so I asked the dealer their views on using this.

Predictably, perhaps, they said no need to do this as no better fuel consumption and the engine is set up for standard unleaded. Can you advise if I should use vPower and are there any downsides? I'm likely to be keeping the car for a good many years.