I bought that same 2mil jaguar just to find out i couldnt win the world champion(or was it the dream car race.. cant remember) with it and just a few races after the FGT was in the used car lot and i didnt have the money to buy it Now i have to grind for it thanks to the jaguar so i suggest the money saving option too
The Jag is more than capable of winning both the World Championship and the Dream Car Championship. If you mod it and can drive well enough it can even win the All Stars race although that one will be a bit of a challenge in it as it is not an LMP car.