What fuel is stated for your engine in the manual?

Watch these:

 

ive just put normal unleaded in mine as im not sure putting super in made any difference apart from making the engine sound abit rougher my mpg seems to be quite inconsistent

 

i noticed no difference either.Ive got 122 dsg and getting around 38mpg . just had first service and audi guys said itll get better with more miles on it...... instant mpg can be 40 - 50 mpg . this is my only complaint of car as i expected 44 ish mpg.mpg really gets a hit when doing 60 - 70 mph.

 

I've tried Shell V-Power and that didn't seem to make a difference to mpg. Throttle response seemed to better but I could've just been imagining that.

 

the 1.4tsi is capble of high 30s low 40s ive heard of them doing the sort of range & mpg id be happy with

ive had as low 29mpg & 33mpg out of mine :?

 

Manual just says look at fuel flap, which says 95.

As an aside managed 48mpg today coming home ona mainly motorway route In normal mixed use we get 40mpg and about 350 miles between fill ups.

 

95 octane is standard fuel. Using premium fuel have no effect.

 

I have 122 DSG and I always use Tesco momentum 99.
My wife borrowed the A1 for the weekend and put standard unleaded in, you can feel a difference! (less punchy?!? :lol: )
Not really noticed a difference in MPG figures but I don't worry about this too much.

 

this is my second A1 1.4 TFSI Sport - had the first for nearly 2 years, new one is now 3 months old with 3000 miles on clock. I am now averaging around 44 mpg. This was around the same mpg I had on last car too.

I only use Shell V-Power in the car. If I have to switch back to 'normal unleaded' which I did for a period of couple of weeks about a year ago when there seemed to be a suply problem I noticed the car lost a little of its edge ie slightly slower pick up from start and in gear, not much but just a little. On the MPG didn't seem to casue much variance.

So I think the higher Octane may get you a little more power

 

This old one again! :mrgreen:

A higher octane number does not, in itself, give more power. What the higher octane number does do is offer greater protection from 'knock' or pre-ignition. What this means is that if you use a higher octane number fuel you can map the engine more aggressively, and it is THIS that can give you more power and/or more economy. In the olden days this meant you could twist the distributor to advance the ignition timing, but once you had done this you were then stuck using high octane fuel. These days a lot of engines, especially turbocharged ones, use knock sensors and dynamic engine mapping. This means the ECU can constantly fiddle with ignition timing to find the sweet spot, using feedback from the knock sensor to sense when it has overdone it and to back off a little. This is why some engines can get better on super fuel and others (with static or fixed-base mapping) can not.

 

Which begs the question... does the A1 have fixed mapping or adaptive/dynamic mapping?

 

Page 139 in the manual; it would appear so. Actual fuel type recommended is on fuel tank flap sticker.

 

Yeah mine says 95 RON (1.4 TFSI 122). The copy of the electronic manual I have says 98 RON, and only use 95 if 98 is not available. However, I suspect that's for the 185.

 

Yea that's me. I've been using Shell 98 and BP 97 once.

 

The 3 categories for petrol in the manual are:

95 normal, 91 slight loss of power.

95 normal, 91 emergency.

98 normal, 95 slight loss of power, 91 emergency.