Fuel Economy - What do you get out of a tank? (3rd gens only)

[Lugo]

Well after running a full tank of premium fuel (shell) in my TF, I only managed 350km in a week with mostly city driving and maybe a 10 min run on the freeway each day.

I don't know but to me that's pretty piss weak. Anyone got any ideas what the hell I can do to fix that? My tyres are 38psi on the front and 35 on the back, my air filter is a little dirty but I'll replace that this week but other than that I got no idea!

Maybe the o2 sensor. Mines pretty bad like that too atm, is yours overdue for any servicing?

I don't bother running it to empty any more, just top it up once a week. Normally putting anywhere from 1/2 to 3/4 of a tank back in, average works out to 16.5L/100km on that, 70/30 City/Highway split.

Not particularly happy with that, means I'd be lucky to get 360km off a tank if I did use the lot, I'd imagine its supposed to be much closer to 500km, I'd be happy with 500km off a tank with my driving, its embarassing to see the TR Astron get better economy than me I don't boot it anymore either apart from maybe 2 or 3 occasions per tank.

[Magna Rookie]

My new record!

8.8/100 km's!!!!

70/30 highway/suburban, i went real easy on it this week, so light on the pedal it wasnt funny, dropped from 9.5. And this was on 'budget' petrol to!


(3L-Auto) Im stocked!

[mjd26]

I used to fairly predictably get 12 - 13L / 100K regardless of whether I used my air-con / not, thrashed it / not, drove country k's / not (etc). Didn't seem to be much I could do to get it to change.

Since I got my car put onto gas, petrol k's are more up around 15L/100K, but the trade off is that I'm getting a fairly similar mileage on LPG.
Last 3 tanks:
65.4L - 398KM = 16.4L/100 (lots of air-con and a bit of thrashing)
66.2L - 426KM = 15.5L/100 (no air con and a bit of thrashing)
65.8L - 432KM = 15.2L/100 (no air con and general placid driving, only very rare thrash)

Given current ratio of LPG price to gas price of somewhere from:
65.9 : 146 (1:2.21)
to
67.9 : 162 (1:2.39)

That's about the same (price wise) as getting something in the vicinity of 6.8L/100K

Pretty pleased with that.
A little shat off at the power decrease that I took to both petrol and gas when it got installed, but for the 50% saving in fuel costs, it really is worth it.