any new/used car i've ever bought has never had much petrol in it, literally enough to get me to the nearest petrol station, which to be honest if you're buying new you should expect a full tank of petrol.
Last year I bought 3 new fiat scudo's. (From an approved Alfa dealer). When we picked them up there was just vapour in the tanks. I told the salesman that it was out of order and he eventually agreed and put £20 of juice in them. Wooooo, ar'nt I lucky?
A few months later, I bought my used spider from an independent dealer and it came with a nearly full tank!
I know which dealer I will and won't use again in the future!
When I picked up my new Alfa, it was completely empty, the fuel gauge hardly moved. The closest petrol station was 200m from the dealer, going downhill so no problem even with no fuel at all, but one would expect better service...
My 147 ran out of fuel on the test drive, just as we parked up outside the dealers. He insisted he would put half a tank in when i bought it. When i collected it it went for 5 miles before the reserve light came on :s
Got my GTV with a bit under 1/4. Traded my 156 about 50km of driving on the yellow light. They can fill my car to have people test drive it When buying my first 156, the (Alfa Romeo used car) salesman threw in a full tank of fuel without me having to even ask.
Its certainly true that a full tank of fuel is the least likely to explode as there is no air, but on the other hand, if a forecourt were well alight the ruptured fuel lines from a full tank would keep the glow going for an awful lot longer. You pays yer money.
Many used car dealers drain fuel tanks, they make lots on it, but when buying its as well to specify a full tank as part of the deal, but then we don't always remember when we are excited about a shiny new/newish car do we. New cars should come full, even if you've paid in the price. Its just bad form isn't it.