ya but according to wiki the 1.6 is quite heavily modified engine over the 1.5 so even though its only 25bhp more, its a much more fluid - and willing to rev funbox:
" it is powered by a high-revving 1.6 litre, naturally-aspirated DOHC VVT 4-cylinder engine with a 11.1:1 compression ratio, 4-1 exhaust manifold, High lift cams, Forged pistons, and strengthened valve springs. it is powered by a high-revving 1.6 litre, naturally-aspirated DOHC VVT 4-cylinder engine with a 11.1:1 compression ratio, 4-1 exhaust manifold, High lift cams, Forged pistons, and strengthened valve springs."
but the standard 1.5 i would have thought less fun!
my friend had a leon 2.0 tdi 150 from new as a company car and he drove it everywhere like he stole it, and averaged 40-50mpg