Far too many variables really to compare cars over the whole country, I'd guess. On a bad day I'm pushing down towards 30mpg (lots of sitting in traffic around town, and idling on the ranks, say), while on a good day I'd be closer to 60mpg - no doubt with a long distance run
Of course, I could post my long term average, but again that varies depending on what I'm doing. Most of my time in the trade I've done nights, so because of less traffic your MPG tends to be better, while at the moment I'm a bit more towards days, therefore...
And even assuming days, it depends here which rank I'm working. Out at our station you have to wait a long time for runs, but they're typically five miles or so mainly on A-roads, so obviously easy on the fuel. On the other hand, for months now there have been major roadworks on that route, so regularly doubling journey times, and thus impacting MPG
So I'd guess the only thing that can be deduced from your friend's experience is that his newer motor is more fuel efficient than his older motor. I think that's about it
(But, of course, you really need at least a year using the same car to compare consumption - winter weather is hard on fuel, while warmer weather helps MPG. Except when it gets warm enough to need your aircon on - that's hard on fuel
).And, for what it's worth, will post similar figures between my old and new cars later. But they're very different cars, so difficult to compare. And I'm not going to post precise figures like Rashid did, because it's maybe not good to get a bit OCD-ish about stuff like that. Been there, done that, blah, blah
