Hi
Fellow 1.4 TSi driver here (1.4Tsi Sport) along with a few others on the site, notably BigBadJay
The 1.4 TSi engine is a good engine, it’s relatively powerful for its size and economical.
When you consider the 1.6 Zetec engine in the Ford Focus is 100BHP, against the stated 125BHP of the 1.4TSi on the Leon, its got a fair bit of poke.
Mine feels quick enough and has enough poke for the traffic light grand prix
I regularly see between 30 - 32mpg on my commute to/from work, which is a 14 mile round trip from home into Manchester city centre and back.
The most I’ve had is 54.6 mpg on Christmas day 2011 driving home from Sandbach, using the M6/M56/M60, doing a constant 60mph on cruise control sat in the left lane.
If your constantly on the power with a right foot made of lead and having it on boost with the turbo kicking in all the time, you wont get anywhere near the manufacturers stated consumption figures.
Can't fault mine, its been really impressive so far, i'm sure you'll be pleasantly surprised