Magic 30mpg

[ianm5]

I think I just hit the magic 30mpg over a full tank, 440 miles run with about 65 remaining range showing (which would no doubt drop like a stone)

Was booths texaco supreme unleaded, tyres inflated for 2 plus bags (I don’t like rock hard mode).

Mix of ‘legal’ motorway run, A702 and about 1hr city crawls. Really hard not to go into M1 on the A702. I did try and stay very stable on the motorway speeds.

If it did a genuine 30mpg that’s really impressive for a car like this. I thought I would be looking at 24ish.

[Taheemr]

better to a manual calc, best I have had was an average of 27mpg, typically get 23/25mpg

[ianm5]

I’m assuming the tank is 15 gallons, so 440 plus indicated 65-70 (call it 50) reserve showing, calculates out at about is about 32mpg

I’d like to measure full to full but I rarely put more than 30quid in, seems pointless to lug fuel weight about

[M5Rick]

Originally Posted by ianm5

I’m assuming the tank is 15 gallons, so 440 plus indicated 65-70 (call it 50) reserve showing, calculates out at about is about 32mpg

I’d like to measure full to full but I rarely put more than 30quid in, seems pointless to lug fuel weight about

I wait till a just under 1/4 tank then fill completely or they'd be saying to me at the Momentum station if I have a home to go to coming in so often

[F10CPROG]

Great figures i have seen 30/32mpg on a run before, but never over a full tank. Usually averages out to around 20-24mpg.

[b21playa]

Wow, I’m showing around 16mpg but mainly local driving

[hawker1986]

Originally Posted by ianm5

I’m assuming the tank is 15 gallons, so 440 plus indicated 65-70 (call it 50) reserve showing, calculates out at about is about 32mpg

I’d like to measure full to full but I rarely put more than 30quid in, seems pointless to lug fuel weight about

Pretty sure your maths may be a bit out - the tank is 80L which is 17.6 gallons. Actually puts you at max 29mpg I reckon.

The best ive every seen across a whole tank is 28.9 mpg and im averaging about 21 over 12k miles. I still think all things considered the car is decent enough on fuel.

[ianm5]

Ahh balls

I’d read the tank was about 15 uk g, if it’s 80l then it came out (in the end) as 28.8 ... so no magic 30.

I got the tank capacity from a google search and I guess I took it at face value because the prices are so low atm.

[hawker1986]

Originally Posted by ianm5

Ahh balls

I’d read the tank was about 15 uk g, if it’s 80l then it came out (in the end) as 28.8 ... so no magic 30.

I got the tank capacity from a google search and I guess I took it at face value because the prices are so low atm.

Pretty sure its 80l - I filled up saturday and put in 72l which is close to 16 gallons and it wasnt empty then

[F10CPROG]

Originally Posted by hawker1986

Pretty sure your maths may be a bit out - the tank is 80L which is 17.6 gallons. Actually puts you at max 29mpg I reckon.

The best ive every seen across a whole tank is 28.9 mpg and im averaging about 21 over 12k miles. I still think all things considered the car is decent enough on fuel.

Exactly what you say here mate. Last sentence. They are a heavy old car and also very rapid once rolling. Will destroy 98% of the cars on the road from 40mph upto silly speeds even some supercars won't come close. So high 20s on a run is superb and average of 20mpg is fine by me!