Hi All My 2004 Vectra, 1.8 Energy passed it's M.O.T first time last week, but today the oil light came on - I checked the oil and it was a bit low, so I put some oil and I no longer get the warning light. There is no obvious leaks and no oil stains visible when I move the car from my driveway or it's usual spot at work, but I am a little concerned...The car drives vey smoothly and has been serviced every 20k miles as that's what vauxhall recomend. Current mileage just over 72k. My friend tells me that this is not all that unusual, but I had vauxhalls in the past and never had this problem. If I take it to vauxhall's, they are bound to find something wrong and something expensive, hehe...If they just do diagnostic test on their computers, would that get to the bottom of the issue? Do they check oil when they do M.O.T.s? Cheers, George