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impreza sti mpg

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Old 01 July 2007, 09:42 PM
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tedster
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Default impreza sti mpg

just a quick question really it aint going to put me off getting an sti but i was wondering why are imprezas so thirsty on fuel compared to other 2 litre turbo motors???
Old 01 July 2007, 09:44 PM
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The Dogs B******s
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Because we all like a drink.
Old 01 July 2007, 10:10 PM
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scoobystiv8
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Originally Posted by tedster
just a quick question really it aint going to put me off getting an sti but i was wondering why are imprezas so thirsty on fuel compared to other 2 litre turbo motors???
Try finding any 2L turbo 4x4 capable of or similar to a STi in performance terms and you will find no difference in fuel consumption. Apart from the front wheel drive brigade. If you are concerned about fuel already then its not the car for you. Buy a diesel
Old 01 July 2007, 10:57 PM
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moffett
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my 02 sti takes roughly 45-50 to fill and i can get 230miles of mixed driving which i think is very good.
Old 01 July 2007, 10:59 PM
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donnas roo
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Version 8 Sti and i get between 16 & 18 on normal town roads. Stop/start.
If your worried about the fuel, get a smaller car as they are the alkies of the fuel world.
Old 01 July 2007, 11:03 PM
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bob r
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Originally Posted by tedster
just a quick question really it aint going to put me off getting an sti but i was wondering why are imprezas so thirsty on fuel compared to other 2 litre turbo motors???
Because that acceleration is so addictive... and even more so when you fit a performance exhaust.
Old 01 July 2007, 11:58 PM
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anthscooby01
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Originally Posted by bob r
Because that acceleration is so addictive... and even more so when you fit a performance exhaust.
Have to agree! When u plant your foot in an STI it goes like a Jet Fighter with similar noise. Who cares what MPG it gets!! Does not enter the equation mate!!
Old 02 July 2007, 01:54 AM
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Dill_typeR
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As above, find another 4x4 with the same performance and check mpg.

Depending on mods you could get a remap, made mine quicker, and better mpg, usually about 25mpg, and i don't hang about, on a recent trip to the ring, i was getting 300miles to a tank cruising there
Old 02 July 2007, 11:14 AM
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Martin2005
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I get about 23mpg in my T25

the reason an STI drinks so much fuel is simple - 300bhp!
Old 02 July 2007, 11:23 AM
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TimH
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Used to get the yellow fuel warning light come on at 210-220 miles, and always filled up within 30-40 miles (50-52 litres), giving around 21 mpg.

Since full decat and remap I get an extra 20-25 miles to the tank . An extra 1mpg despite fully enjoying the extra 50bhp it's now got.

All I need to do now is drive the car for 500,000 miles and the mod will have paid for itself
Old 02 July 2007, 01:23 PM
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lestippp
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My 05 sti ppp consistantly gets 20mpg on mixed driving, bit of overtaking, bit of cruising, bit of town and the odd blast. Best ever was 23mpg on a long cruise. Car is just now hitting 11,000 miles and have heard that they don't really loosen off properly until around this milage.
301bhp = mega fun & mini mpg! As long as you're not fussed (tight budget) don't worry about it, just drive and enjoy. I use BP Ultimate by the way.
Old 02 July 2007, 01:25 PM
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My sti 3 consistantly gets 25mpg, normal town/a road driving.
Show me a 300bhp 4wd 2L turbo car that gets more than 20mpg!
Old 02 July 2007, 01:58 PM
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The rookie
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Originally Posted by chrispurvis100
My sti 3 consistantly gets 25mpg, normal town/a road driving.
Show me a 300bhp 4wd 2L turbo car that gets more than 20mpg!
Errrr your Sti3?

Driving style is even more critical with a turbo engine than an NA, way back my Dad had two Sierra Cossies (RWD and 4x4) and two Rover 620tis, all four averaged about 23mpg which seems about what most on here get, road town is worse, on a run better. Sti RA's with the mental gearing can be worse (short gearing) or better (owners ears can't stand over 75mph!) than the rest.

The EJ20's overlarge bore to stroke ratio doesn't help thermodynamic efficiency as the cylinders cooled surface is larger than a squarer or under square engine, also the pre-slipper piston engines had a bit too much parasitic drag, 4WD doesn't help but it's only another small part of the equation!

Simon
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