Discussion
macp said:
Fox- said:
macp said:
So maintenance costs aside it seems from reading various threads that anything from a 2.5 to 5.0 has pretty similar fuel consumption dont you think ?
No, I don't think. 
What I've noticed with barges is that, generally, fuel consumption is linked to cylinder count not engine size. So if a car has 2 V6's and 2 V8's in the range, you'll probably find you get similar consumption out of the two similar engines.
But a 5.0 is going to drink noticebaly more than a 2.5.
Fox- said:
macp said:
Fox- said:
macp said:
So maintenance costs aside it seems from reading various threads that anything from a 2.5 to 5.0 has pretty similar fuel consumption dont you think ?
No, I don't think. 
What I've noticed with barges is that, generally, fuel consumption is linked to cylinder count not engine size. So if a car has 2 V6's and 2 V8's in the range, you'll probably find you get similar consumption out of the two similar engines.
But a 5.0 is going to drink noticebaly more than a 2.5.
Fox- said:
macp said:
Fox- said:
macp said:
So maintenance costs aside it seems from reading various threads that anything from a 2.5 to 5.0 has pretty similar fuel consumption dont you think ?
No, I don't think. 
What I've noticed with barges is that, generally, fuel consumption is linked to cylinder count not engine size. So if a car has 2 V6's and 2 V8's in the range, you'll probably find you get similar consumption out of the two similar engines.
But a 5.0 is going to drink noticebaly more than a 2.5.

Edited by macp on Wednesday 24th November 09:09
Consumption is also related to use so, for example, a Subaru WRX driven at the same speeds as a 5.7 litre Corvette will drink the same or more because it's trying harder. It's not just the fuel costs though as an American engine will not only give you 24-35mpg driven conservatively but can be serviced using nothing more than oil and filters and your own wit and guile....and cost less to tax.
Or888t said:
Fox- said:
macp said:
Fox- said:
macp said:
So maintenance costs aside it seems from reading various threads that anything from a 2.5 to 5.0 has pretty similar fuel consumption dont you think ?
No, I don't think. 
What I've noticed with barges is that, generally, fuel consumption is linked to cylinder count not engine size. So if a car has 2 V6's and 2 V8's in the range, you'll probably find you get similar consumption out of the two similar engines.
But a 5.0 is going to drink noticebaly more than a 2.5.
Some model ranges there can be very little difference in fuel consumption. Using my own car as an example, the 3.8 V6 is hardly any more economical than the 5.7 V8.
300bhp/ton said:
macp said:
So maintenance costs aside it seems from reading various threads that anything from a 2.5 to 5.0 has pretty similar fuel consumption dont you think ?
Erm, sort of stating the obvious, but type, make and model of car might have some bearing on it..... 
macp said:
300bhp/ton said:
macp said:
So maintenance costs aside it seems from reading various threads that anything from a 2.5 to 5.0 has pretty similar fuel consumption dont you think ?
Erm, sort of stating the obvious, but type, make and model of car might have some bearing on it..... 
Or888t said:
Fox- said:
macp said:
Fox- said:
macp said:
So maintenance costs aside it seems from reading various threads that anything from a 2.5 to 5.0 has pretty similar fuel consumption dont you think ?
No, I don't think. 
What I've noticed with barges is that, generally, fuel consumption is linked to cylinder count not engine size. So if a car has 2 V6's and 2 V8's in the range, you'll probably find you get similar consumption out of the two similar engines.
But a 5.0 is going to drink noticebaly more than a 2.5.
macp said:
300bhp/ton said:
macp said:
So maintenance costs aside it seems from reading various threads that anything from a 2.5 to 5.0 has pretty similar fuel consumption dont you think ?
Erm, sort of stating the obvious, but type, make and model of car might have some bearing on it..... 
At one point I used to average 28mpg in a 1.8i MGF, 27mpg in a VVC MGF and even managed to get a 1.1 Rover 200 to also average 28mpg. Yet a 3.5 carb V8 would do 24mpg on the same roads.
But this could be misleading as on a longer more sensible run the 1.8i MGF would do 37-42mpg while the V8 remained at 24-26mpg.
300bhp/ton said:
macp said:
300bhp/ton said:
macp said:
So maintenance costs aside it seems from reading various threads that anything from a 2.5 to 5.0 has pretty similar fuel consumption dont you think ?
Erm, sort of stating the obvious, but type, make and model of car might have some bearing on it..... 
At one point I used to average 28mpg in a 1.8i MGF, 27mpg in a VVC MGF and even managed to get a 1.1 Rover 200 to also average 28mpg. Yet a 3.5 carb V8 would do 24mpg on the same roads.
But this could be misleading as on a longer more sensible run the 1.8i MGF would do 37-42mpg while the V8 remained at 24-26mpg.


300bhp/ton said:
macp said:
So maintenance costs aside it seems from reading various threads that anything from a 2.5 to 5.0 has pretty similar fuel consumption dont you think ?
Erm, sort of stating the obvious, but type, make and model of car might have some bearing on it..... 
Guess it depends on how they're driven too - the same person driving 2 cars with different engine sizes would be a good comparison.
Out of my 2.5 I have been getting roughly 38mpg over the last 14K miles, not sure I'd do quite as well out a bigger car with a bigger engine an mine isn't exactly straining most of the time.
Out of my 2.5 I have been getting roughly 38mpg over the last 14K miles, not sure I'd do quite as well out a bigger car with a bigger engine an mine isn't exactly straining most of the time.
macp said:
300bhp/ton said:
macp said:
So maintenance costs aside it seems from reading various threads that anything from a 2.5 to 5.0 has pretty similar fuel consumption dont you think ?
Erm, sort of stating the obvious, but type, make and model of car might have some bearing on it..... 
Just look at the combined figures for the two, the E39 540i is 22.7mpg the E46 325i is something like 32. Now we all know that the figures are just that, figures, but they are hardly going to be spot on for one and misleading for the other! i suspect even if the figures are optimistic the difference between the two cars is reasonably correct.
Not so much a barge (well some people might consider it to be so) I get ~20mpg day to day out of the Mustang, a 4.6L V8 auto weighing around 1550kg. Out of the ST I had before the most I could get staying off the turbo was 26mpg. Driving the same as I do now around 24mpg. 2.5l turbo with around 1400kg to lug.
Motorways at 70mph 30mpg and 34mpg respectively.
Motorways at 70mph 30mpg and 34mpg respectively.
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