He's dreaming.

He has probably had a go at a normal 2.0 FSI and doesn't realise there are much more powerful versions ala GTI etc.

My best ever is 7.5 to 100k in the 125kw GT TDI and that's a without mercy attempt. Usual is more like 8.0. I've only ever done that twice, it's not kind to the car.

A stock 103kw TDI has no chance against me from standstill, and a stock GTI leaves me behind.

Diesels are NOT fast 0-100kph cars, their low rev range means too many gear changes compared to petrol. DSG alleviates that a lot, but the facts are still the same. First in a diesel is a woeful gear.

In gear acceleration is a different story, and that's where the 103/125 TDI are quite similar, and about the same as the stock GTI - till you run out of revs and they keep going.

Run him for pink slips.