stu9

We all know wrx's are **** for mpg compared to n/a's....why is this

Now before you start....I've had fast'ish turbo cars before ie 9000 Aero (225hp standard), T5 again, 225, MR2 240ish, all did decent mpg if driving "normal" and returned about 25-30 to a gal, if you opened them up, then you'd be in the early 20s. But what causes the wrx's to be greedy from the word go compared to them (well from I've found), is it the way the ecu's are mapped from the factory....what exactly is it because the Aero and T5 are bigger and heavier, ok they're (wrx's) awd but surely that cant be what causes it in itself, or is it

*matthewturb2000*

iTrader: (11)

4x4 uses more than front or rear wheel drive

ditchmyster

iTrader: (7)

You must be boosting it all the time, takes a bit of getting used to if you want good MPG, I average 28mpg going steady and 33+ on a motorway run.

Don't get me wrong though I can get 18mpg if I try but I mostly pootle and as above 25/28 is normal over a tank full, if your consistently getting low 20's and it bothers you, then you need to change your driving style, a boost gauge really helps.

scoobyman2007

iTrader: (5)

It's a subaru mate if you have a heave foot it's going to cost you

chopperman

Average 28mpg, you poofta I'm lucky to get 18. Boost gauge is a good idea. I think its to do with going over from closed loop fuelling to open loop (or the other way around?) I think it stays in gas guzzler mode for a little while after coming off boost.

Trinity

iTrader: (28)

I dont find the newage cars that bad, I can get a good 30+ on a motorway run in my blob jdm which isnt far away from other ten year old petrol cars, but can drain the tank in twenty minutes if required

My old Type R v4 was brutual though, barely managed 20+ on a motorway mollycoddling it...

Carlh

Had to pipe up, I get 27 on the motorways, 23-24 if trundling about and 19-20 if Im going <hard>. Mine is very economical for what it can do (its a late 2009 hatch). Running 328hp and 370lbs tq (on paper).

LuckyWelshchap

I'm getting 5/l, which is 22-23mpg.

The reason for the apparent thirstiness is efficiency, or rather lack of it.

Firstly, I say 'apparent' because the engine doesn't have design faults etc. that mean it has to use more fuel to run than any other 2.0l engine.

The issue is that to get the car to perform to its spec then engine has to be used far more than the others you've mentioned.

All engines have to propel the car, which involves mainly pulling the weight, overcoming road friction and air resistence. All the power gets sent to two wheels, losing some due to the laws of physics and mechanics along the way, so-called transmission losses.

In a Subaru power is required to all four, so the engine has to overcome more transmission losses than the others and it does this of course by working harder, enabled in a number of ways, such as increased boost.

And a harder working engine means more fuel per second, and hence more fuel per mile etc. etc.

JGlanzaV

iTrader: (3)

Dont have a subaru if you are worried about fuel consumption! As i have said numerous times before i get 100-125miles to a full tank, Id get a polo bluemtion if i was worried about fuel lol

stu9

It seems the older one's are the worst and there's nothing you can do about it then apart from regular servicing ect, being careful and choosing the journeys. Yes I know you have sub turbo when mpg's a concern, but it'd still be helpful to get decentish mpg

*matthewturb2000*

iTrader: (11)

[QUOTE=JGlanzaV;11216429]Dont have a subaru if you are worried about fuel consumption! As i have said numerous times before i get 100-125miles to a full tank,
Wow lol that's not many that's half what I get, is your take half the size or your injectors tripple the size

Trinity

iTrader: (28)

Buy a newage if your worried about fuel...my wallet thanked me after letting the Type R go!

AWG

iTrader: (6)

I'm a firm believer that you use as much fuel as your right foot allows, I managed East London to Lake Windermere on £55 albeit off boost. Hooning is going to cost you in our motors but if you want to get a decent mpg you can.

stu9

Even Sub must have realised they'd better redesign the engines due to people tightening their belts or they'd lose sales, hence the newer ones being better

nyscooby

iTrader: (12)

Who cares less...... just drive it fill it up, rinse and repeat.....

stu9

Some do or they (Sub) wouldn't have made new ones a bit more fuel efficient....some people still want to be able to drive them but not to just so greedy.....that's my tuppence worth

JGlanzaV

iTrader: (3)

As the above, but would add, if you dont want to hoon it, why have a scooby? defeats the entire object of having a 4wd 2.0 turbo car...

stu9

Some like the shape, noise, grip (awd)......me lol

JGlanzaV

iTrader: (3)

but you will never get the feel of the extra grip unless hooning it?

stu9

Oh believe me I notice without raging it