Vsi

Every time surveys were done on the subject the replies seem to have been 'I rarely use it'. Since it would cost money, it seemed like a bad idea to waste that money on something nobody was using, with the thinking being that most garages subscribe to autodata in one form or another. My problem with that is that its all very well looking up something you are unsure about, but the VSI (which I do scan through just in case) helps out when there are items which you didn't know you needed to know. Mercedes 'A' class for instance, which must have the brakes tested with the ignition on but the engine switched off. If you don't know that then you won't be looking it up on autodata when you test the vehicle.