MPG on your e30?

[rcsoundn1]

325ic, 5spd, bone stock, best I ever got was 25.5 driving from NJ to GA..... no traffic

[Verdurous]

91 octane

[nando]

91 RON? you can't buy RON gas in the states.. it's all RON + MON / 2.

[Verdurous]

24-28 on 91 ron, 1989 325is chipped headers cold air intake 13lb wheels redline lube.

On a long road trip to mass I nearly held 30, but 88 had to much construction to keep it going.

[Ether-D]

M20b25 with an Eaton m90 manifold-mount roots type supercharger at 7psi and a 5-speed with 3.73lsd. I got 23mpg mixed but I hammer down a lot. That's exactly the same as I was getting before the m90. I think something was going on before with o2 sensor or something. I reckon I have about 220 crank HP now.

edit: that's on premium.

[Hooffenstein HD]

^ which is 15.7mpg and terrible if anyone's wondering

I think cylinder 5 injector is stuck open because it keeps fouling plugs and misfiring hard.

[Varinn]

OBD2 S52B32 with M50 manifold, G260, 3.73 lsd and a heavy foot I get 12L/100km (19.6mpg) in town. Extended highway runs I average 8L/100km (29.4mpg), I drive fairly hard most of the time so I'm happy with the results.

[serdar255]

Calculated mine the last few fill ups and average 16.5 to 18 with a 4.10 and a heavy foot.

Does that sound normal?

[Wh33lhop]

^ which is 15.7mpg and terrible if anyone's wondering

I'm getting about 19mpg so far mixed driving in my s50 cammed m50 with 4.10LSD winding it out to 7k every chance I get.

[Hooffenstein HD]

Tired 323i blowing a shit tonne of smoke and feels like it has the power of an M10B16. Getrag 260, small case 4.10 and a heavy foot.

15l/100km in mild traffic city driving.

[DER E30]

My cammed m42b18 with 4.10 rear just got 28mpg ripping back and forth on backroads between the next town and home.

I don't have a good freeway figure that isn't polluted with the backroad ripping behavior but am thinking North of 30...

[e30jake]

Seta 2.7i conversion, kamotors intake, m50 17lb injectors, Alpina chip copy, 2.93 diff

Just got 34.6 doing 99% highway round trip at 65 mph with the windows down the whole way. Usually mid 20s around town

[702pjc]

Something is wrong. you should still be able to hit over 20 on the highway with a 4.10.

I know my engine's not quite tuned right and my mileage is still better than yours, with a larger engine, 4.10s and AWD. I haven't done anything about it because I'm planning on redoing the entire EMS anyway.

Well I'm in his situation as well. I'm getting gas mileage equivalent to a 5.0 mustang. Replacing the FPR and my injectors (I've already done the orings) are as my last hope.

[lukeADE335i]

M30B35 manual e30 with 3.73 diff.

City: 13L / 100km (18mpgUS)
Highway:??? ... only recently fixed my odometer gears and began tracking mileage.

Strangely, the city mileage is slightly better than when my car was a 2.0L M20 automatic!

Can update this now as I did a country run today:

City: 13L / 100km or 18 mpg
Highway: 9.3L / 100km or 25mpg - mostly between 55 & 70 mph.

Doesn't seem any worse than the performance orientated M20s in the tread :)

[nando]

That's what I'm saying. I have a 4.10 and I get 17 driving like a wet blanket. 15 if I'm giving it a little go.

Something is wrong. you should still be able to hit over 20 on the highway with a 4.10.

I know my engine's not quite tuned right and my mileage is still better than yours, with a larger engine, 4.10s and AWD. I haven't done anything about it because I'm planning on redoing the entire EMS anyway.