Fuel Economy - Cruising Speed (Petrol)

Scottland

Scottland

Scottland

Soldato
Joined
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North Wales
I'm looking into a cheap petrol car (*ahem* Mondeo). Anyway, I'm interested in what MPG I'd get sat cruising at 70mph.

This is to compare to a diesel, my current one for instance (307 HDI) manages about 50mpg at 70.

As I said, the specific car I'm looking into is a 2l mondeo (both mk2 and mk3), but I'm also interested in what VAG engines amongst others can get.

Or what would be great, is how many miles you'd get out of a full tank with mainly motorway miles.

Cheers
 
From a Mk2 at least, you will get between 40 and 44mpg cruising at that speed.

The last pure Motorway trip I did I got 43.9mpg from having cruise set to an indicated 75mph.
 
Thanks, thats the sort of info I'm after. I'm not too worried about around town as I don't drive around town that much, it wouldn't make any difference. Are other petrol engines (2litre) as frugal at those speeds?

How much does thirst vary between speeds? Say between 55 - 80mph.

For instance, in mine (according to the trip computer at least) I average 60mpg+ at 55, which drops to about 35mpg+ at 80.

Would it vary just as much?
 
Ive sat at 80mph+ up the M6/M74 to Glasgow several times. My fuel economy is always 5 million miles to the gallon.

Car is a Seat Leon 1.9TDI (VAG) Seriously I guess its around 50mpg.
 
Don't know if I should make a new thread but my VR6 is doing about 22 mpg normal/enthusiastic driving. I REALLY tickled the throttle on the 20 mile drive home at 60 mph max. 32 mpg.. greeeeeeat!!

It must have a bloody superchip or something strapped on or is that normal.
 
For motorway driving in my Mk2 2 litre I used to budget for between 30 and 40mpg, where 40 was sticking to the law, and 30 was for 90+
 
Pants said:
Don't know if I should make a new thread but my VR6 is doing about 22 mpg normal/enthusiastic driving. I REALLY tickled the throttle on the 20 mile drive home at 60 mph max. 32 mpg.. greeeeeeat!!

It must have a bloody superchip or something strapped on or is that normal.
Click to expand...

Doesn't sound particularly bad.

My Mondeo Mk3 2.5V6 averages 23-25mpg, with long motorway trips hitting 30 max.
 
Oblivious said:
Ive sat at 80mph+ up the M6/M74 to Glasgow several times. My fuel economy is always 5 million miles to the gallon.

Car is a Seat Leon 1.9TDI (VAG) Seriously I guess its around 50mpg.
Click to expand...

Ditto in the Golf 1.9TDI. I spent some time on European motorways over the summer. I averaged 75mph over 600 miles and spent sustained amounts of time (30mins+) at between 100-110mph, and still average 45mpg by the end of it.

I believe VAG diesel engines actually run on Kittens and air.
 
My Skoda Octavia RS (petrol 1.8t VAG engine) can get up to more than 40mpg on an extended motorway trip (100s of miles). On my normal motorway runs - about 30 or 40 miles maybe about 35-38mpg.
 
My old Golf 16v gets ~24mpg at a sustained, actual 1.01 leptons.

1.1 leptons or above for any period sees it drop well into the teens.
 
One tank motoway mileage for the 90% of it got me 323 miles worked out around 45 mpg at the time, that was pushing it tho, average around 42 MPG, i do mostly motoway milage during the week car in question is Toyota Paseo 1.5Si.

thedazman
 
i have a high compression turbocharged zetec from a mk2 mondeo bored out to 2.1 litre and running 15psi boost and a T34 turbo

i run a wideband sensor and when cruiseing it runs 14.7:1 AFR and 12.2:1 on boost

i drove 275 miles and used £42 of optimax

i hope thats ok for a self built and mapped engine

if im using it rally **** style on the country roads im lucky to see 100 mile to a tank!
 
I get between 52 and 55mpg according to the computer at a steady 70mph. Thats for a VAG TDI130 in a Fabia vRS. As a comparison my previous VW Bora 1.6 regularly did about 37-38mpg on the M6/M74 run to Glasgow.
 
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