35IS MPG Figures?
- Thread starter sunnydays
- Start date
I honestly don't think it does either of those things. It certainly doesn't run leaner that's for sure.
If you fuel is poor quality, like the 87 and 89 octane fuel they get in the US then the car will reduce ignition timing if it senses knock. I think it will also reduce the maximum boost pressure the car will target by reducing the load target. In the UK our standard fuel is pretty good, minimum of 91 octane I think.
I only ever use Tesco Momentum and Shell VPower. Tesco Momentum seems to be capable of highest power output and is also a huge amount cheaper than VPower. I only use those fuels because I have tuned the ignition timing to be at the knock threshold for 93 octane fuel, any less and it will reduce my ignition timing.
As far as cleaning additives I can't comment. I've read on several different occasions that direct injection systems don't benefit from this cleaning. I certainly wouldn't pay 10p extra per litre purely for the advertised cleaning benefits. In my opinion you are wasting money using premium fuel on a car that runs a standard engine tune.
If you fuel is poor quality, like the 87 and 89 octane fuel they get in the US then the car will reduce ignition timing if it senses knock. I think it will also reduce the maximum boost pressure the car will target by reducing the load target. In the UK our standard fuel is pretty good, minimum of 91 octane I think.
I only ever use Tesco Momentum and Shell VPower. Tesco Momentum seems to be capable of highest power output and is also a huge amount cheaper than VPower. I only use those fuels because I have tuned the ignition timing to be at the knock threshold for 93 octane fuel, any less and it will reduce my ignition timing.
As far as cleaning additives I can't comment. I've read on several different occasions that direct injection systems don't benefit from this cleaning. I certainly wouldn't pay 10p extra per litre purely for the advertised cleaning benefits. In my opinion you are wasting money using premium fuel on a car that runs a standard engine tune.
willgill said:never seen 30mpg unless im going downhill with the engine offmine is currently on 17.7mpg average. Driving like a saint i think I got nearly 430miles from a tank which equates to about 26-27mpg.
I didn't buy the car for it's fuel efficiency
You were driving much better than you thought.
430 miles from brimmed to empty would be 35mpg and from brimmed to first warning would be 38mpg.
