I've done some searching and have come up a bit blank.
4.6 P38 on 96ron unleaded. I'm averaging ~23litres/100km in city traffic. It's semi rush hour driving, not really stop start but more 30kmh crawl, and round town at 50kmh with a short burst on the m'way at about 90kmh. I don't think I'm heavy footed but I'm staggered at how much petrol I'm going through. Using this calculator this equates to about 12mpg. Engine runs smoothly and doesn't seem to have any flat spots.
I have a 5series BMW with a 4.4 V8 and I'm probably using twice the petrol in the P38 doing the same type of driving (but I'm more heavy footed in the BM).
Is this normal or do I need to start checking oxygen sensors etc.
4.6 P38 on 96ron unleaded. I'm averaging ~23litres/100km in city traffic. It's semi rush hour driving, not really stop start but more 30kmh crawl, and round town at 50kmh with a short burst on the m'way at about 90kmh. I don't think I'm heavy footed but I'm staggered at how much petrol I'm going through. Using this calculator this equates to about 12mpg. Engine runs smoothly and doesn't seem to have any flat spots.
I have a 5series BMW with a 4.4 V8 and I'm probably using twice the petrol in the P38 doing the same type of driving (but I'm more heavy footed in the BM).
Is this normal or do I need to start checking oxygen sensors etc.