Whats the best fuel consumption figures you ever got?

Had my classic from new (13 years) and have now done 137,000 miles. Mass airflow sensor went dodgy at 60k miles as expected. Just changed again as a matter of course since I've done 77k on it. At the same time switched to Tesco Momentum 99 octane and did an ECU reset.

Last weekend went down to my folks in East Sussex from the midlands. Did 36mpg taking it easy at 70mph on motorway with about 20 miles of towns/country lanes at the end. On return journey topped up before motorway and same again at end of journey. Stuck religiously to 70mph for motorway 133 miles. 38.33mpg.

For ref I get 27-28 mpg in general motoring with a few blats now and again. The car would do 7-8mpg when maxing it on German autobahns or on the Ring.

James

 

I get 34mpg from my classic when I have worked it out. It may have been a little more or less but as a idea, mixture of driving ( more relaxed driving style than most)

 

I've been getting 34mpg in my 2005 sti recently. Just had a forged engine build and running so been driving like a girl

 

I usually get around 35mpg when steady driving but I cant help but blip the throttle ;-)
Btw what went wrong with your maf to make you change it?

 

I get 36 typically on a long run. How do you work out your mpg? Seems unbelievably good.

 

The first MAF went at 60k miles. After a battery disconnect for other work (which then of course resets the ECU) the car was lumpy at idle. A mate warned me of this since the same happened to his 99MY car about a year before.

Recently the car had been running ok until I got a misfire under load. Mark at TD Subaru, Warwick (great guy BTW) correctly diagnosed a cracked plug porcelain. I mentioned that the current MAF had done 77k miles now and he agreed that changing it would be prudent. He said their failure can manifest in a number of ways from total stop to rough running / bad fuel consumption. He also suggested keeping the old unit in the boot in case the new one ever fails. Worth noting that the 2 fasteners are non-tamper torx, but if you're careful a decent pair of pliers will remove them. Switch them for normal screws.

 

Wait til the pump clicks off then do 2 more clicks in quick succession to confirm. To be super accurate I suppose one should brim it to the top of the filler, but this takes quite a lot of time. Do it at start and finish of journey and reset the trip.

I reckon if I stuck to 60mph on the motorway it would do 40mpg+, but cant be arsed to go that slow.

At 137k miles the engine is well run in and loose, but still responsive and powerful as ever. I have had the car from new and ALWAYS run it on best quality synthetic oil. For the last 100k miles its always had Mobil 1 0w40, which is nice and thin. Car barely burns any at all.

James

 

That's the best way of doing it. Damn that is some good mileage.

 

The trouble is that isnt a good way of measuring it the only way is to fill right up to the brim where you can see the fuel, on the clicks you can still get 3-4 ltrs in there, that would put your consumption down to around 33-34 which is more likely tbh, but one thing i have found over the last 20+ years of driving is that its very hard to match the manufacturers fuel consumption figures for urban and extra urban driving (75 and 56mph), especially in a subaru
Note subaru quote around 33mpg @ 56mph in my car, at 70 i usually see around 25-27mpg (they quote 30 i think at 75).

Tony

 

I get 38mpg on my drive to work and college from blob wrx

 

I only get mid twenties and that's driving pretty steady.

 

low teens-single figures

 

I'm down to low 20's at the moment, I blame mountain roads and no cameras or police.

In the UK I average 28 and on a run easily 34.

Note to self; drive off boost.



Although i'm some what compensated by 100 ron here costing less than 95 ron in the UK.

p.s 100 ron is £1.20 per litre.

 

I bet you don't
As ive said, to even get the quoted figure from the manufacturer is pretty hard, have a slight head wind and you lose 2-3mpg, hit traffic and you lose mpg, do above 70 and you lose mpg.

The "official" figures for the 2002 wrx as these....

Urban (30mph) 19.9mpg
Extra Urban (56mph) 35.8mpg
Combined (75mph) 27.7mpg

I doubt anyone has exceeded that extra urban figure, if you want to try to measure it properly then take into consideration speedo correction (it wont be accurate, that's my major finding with Subaru's), fill the tank to the brim so you cannot get any more fuel in, reset and drive.
Get to the next garage, fill to the brim again (making sure its the same time of day, fuel expands and contracts with the temperature), and test (also fit a gps to the car, you may find the speedo is out by 2-3% so that's more off your mpg ).

 

£45 vpower gets me around 110miles ..... Shocking

 

About 15.5mpg

 

Oops haha

 

i've got a blob wrx with 330bhp and i've managed 36.? a few times, sat at 75-80, twice to brighton from rotherham, once to newquay from rotherham

wonder what mpg i would have got if i'd sat at 56mph????
and 'NO' i'm not gonna find out next time i go down