Advice on an A6 3.0 TDI 204ps manual

[dm790]

Test drove one yesterday and found it a bit slower than my Cooper SD.

Looked at a remap and it said it could take it to 255bhp which would be great.

Would the car be able to handle the extra power or would it just cause lots of wheelspin with it being FWD ?

Also any reliability issues known for the car ? It’s a 64 plate with 50k on the clock