vauxhall omega seems powerless?

I assume the vehicle has manual trasmission fitted? Stick/standard or whatever else it's called around the globe.
Sounds like the clutch is slipping, and due for replacement. Quite expensive, as the transmission needs to be removed.
Although the part does wear with mileage along with the brakes, tyres etc.. bad driving habbits will damage it quickly!

Aussie John
June 2008