Petrol and motorway miles

[S3 NIK]

On a long motor way run, no exciting driving, is it worth getting more petrol for your bucks by putting normal unleaded in the tank.
Just a thought as i am covering a few miles this weekend and figured super unleaded may be a waste of cash.
Nik.

 

[rodenal]

You'll prob get slightly less mpg in an s3 with lower octane fuel, so might offset the cheaper cost of the petrol itself mate

 

[Prawn]

ive always found in mine that the lower MPG offsets the lower cost of the fuel.....

ive run my 1.8T on 99 RON almost entirely, until i almost ran out comming home from worcester yesterday, and didnt fancy paying £1.07 a litre for BP ultimate, so paid 99.9p for normal 95 ron fuel.

on the way up, running on V-power, i averaged 39.8mpg, cruising at around 80-85.

on the way home, averaging similar speeds, i only managed 34mpg.

im not saying its entirely the fuel, but the car felt flat, and unresponsive. the initial torque was still there, but higher up in the rev range i really felt the timming pull back.

not nice.

dont bother trying it, just stick with V-power!