We always seem to have issues with Vauxhalls our most recent were two cars from the same place, a 14 plate astra 1.4 only on 20k miles (sounded like tappets on test drive so wasn't too fussed at the time) this one actually required a new engine apparently the oil filter tore itself apart and scrapped the whole engine (local vauxhall dealers words) and the other one was a 61 plate vauxhall insignia 1.6 around 40k miles it was fine in all gears except 5th & 6th (Was not picked up on test drive small carpark & refused to let us off-site with car) this required a full gearbox rebuild.
Needless to say we avoid Vauxhalls unless they're a really good deal or come in p/x