very happy with the mpg on this, driving steady town driving, 12 miles per day, 4 trips of 3 miles each way, getting 30mpg, and sprited driving from Norfolk to Derbyshire, passing others at every oppurtunity (safely of course), got 41mpg.

Had to put "normal" tesco unleaded other week when the supposed strike was on and lost 5mpg in the one tank full.

getting between 350 and 450 miles on a tank.

59plate 18000k miles, fsh,

41 MPG! Are you sure it's not a diesel? My journey to work is 70% downhill,and driving like a granny,with lots of coasting I cant get that. 29 mpg average overall

The best I have ever managed was 36mpg over a 100 miles of mostly light traffic M4 on a sunday evening, involved sticking at 70mph, and very light use of the accelerator - so no overtaking or any wild passing. However, this was pre stage 1 and pre replacement Diverter Valve (so I had "only" around 160 bhp); again whilst using tesco momentum.

I much prefer reading these kind of mpg threads. :clap:

Think about it you have a turbo charged 200BHP car.

Only 10 years ago that would have been a real performance car do Feed it the best octane petrol you can.

It revs cleaner to the red line and had more energy to use.

If you were an athlete you would not eat fast food would you.

Octane number is not a measure of quality. It's only a measure of how much compression the fuel-air mix can take before it spontaneously ignites ('knock' or pre-ignition). An 80 Octane motor will run like crap on 100 Octane fuel, and vice-versa.

Octane numbers have been raised over the years to obtain greater compression without the dangers of pre-ignition. Higher compression is needed for greater efficiency. Octane rating is adjusted by petrol additives; famously this used to be tetra-ethyl lead.

Changing a motor's compression on the fly can be done, but is complex and adds to their expense, so most motors are designed with a fixed compression that suits a particular Octane number. There is some lee-way (e.g. 95 or 98 Octane) because VAG motors blocks are fitted with a knock sensor that listens for pre-ignition and adjusts the ignition timing sufficiently to compensate over a small Octane range.

Just use the Octane for which your motor's compression was designed.

My Vrs covered 22000 in a year from new on Vpower (99octane) and averaged 36.5 MPG. The few times it had 95 RON the MPG and performance dropped noticeably.

Best tank 40.5

Worst- Very low but very fast!!!!!!!!!!!

gord i can confirm it def a vrs petrol lol... worst i've had is 28mpg, on the 41mpg, was short shifting into 6th, although when had chance to overtake would drop it too 4th for extra boot, came back in tandem with astra vxr, and no hanging around, 2 adults, back seats full of bags, and dog in boot,

Car does seem to like the 99 momentum, 28mpg by the way was only time on normal 95ron, tesco unleaded :(

I used to use 99 Momentum in my 1.8TSI for about 6 months but due to cost have switched back to Tesco 95. To be honest I haven't noticed any difference. The manual states using fuel above 95 RON (or a fuel which has a higher octane number than that required by the engine) won't increase performance or fuel consumption.