Its a bit heavier than a 147 so expect slightly less performance and mpg, I hve owned both.
My last two MPG from brim to brim where 41 & 38, guess which one had more motorways. Interestingly the 41 was bang on with the computer reading, 38 read as 39, so close!
This is with downpipe decat, egr blanked and deleted from ecu.
Mine has averaged around 51 MPG for months now, mostly chugging along the M27 fairly swiftly.
(Restrictor gaskets on EGR, gutted downpipe pre-cat & throttle plate removed)
When I first got it a couple of years ago it was returning a disappointing 42 MPG, mostly due to a knackered thermostat and layers of thick black crud on the intake manifold internals which I have made some effort to reduce.