B230FT Fuel Mileage

Chuck25624 · Oct 28th, 2023, 15:03

Can anyone tell me what the fuel mileage should be on a 1994 940 B230FT? I know that driving habits and conditions are a factor, but I'm only getting about ten MPG around town and thirteen to fifteen on the highway.

360beast · Oct 28th, 2023, 15:29

That's awful, running way too rich. I get very low 20's around town and on a decent long motorway run at least 30mpg.

Probably a worn out ECT.

irishcarfan · Oct 28th, 2023, 19:50

Generally get about 280-300 miles out of a tank on our B230FK

Forrest · Oct 28th, 2023, 22:40

I usually reckon about 24-26 mpg on average. Better on a long motorway run. That’s B230FK with automatic transmission.

The O2 sensor can lead to lower MPG. If it’s original it might be worth changing it.

Mertz · Oct 29th, 2023, 14:59

Low 20s around town. 28-32 on a clear run.

Dirty Rooster · Oct 30th, 2023, 17:12

When my odometer was working I got 31mpg, but I don't do short runs.
I assume I'm at 29-ish, might be rich, I'm thinking about getting a new water-temp-to-CPU sensor ...

If I had a "thing" that told me I'm getting 10mpg around town I'd rip everything apart to find the fault!

Chris1Roll · Oct 31st, 2023, 18:05

The use of the word 'highway' in the OP leads me to belive the poster might be in the US.
In which case their figures will naturally be ~20% lower than UK mpg as their gallon is smaller.

Still utterly appalling though!

Chuck25624 · Nov 4th, 2023, 13:52

Yes, I'm in the US. Should have made that clear.

baggy798 · Nov 4th, 2023, 22:47

You should be getting about 21 around town and 26-30 on a run.

Surprised it hasn't thrown a check engine light. Plugs are going to be getting fouled up and bores washed down.

Chuck25624 · Nov 5th, 2023, 14:14

No check engine light, no codes. Going to change the O2 sensor this week.

Oct 28th, 2023, 15:03	#1
Chuck25624 New Member Last Online: Feb 1st, 2024 22:51 Join Date: Oct 2023 Location: Long Island, New York USA	B230FT Fuel Mileage Can anyone tell me what the fuel mileage should be on a 1994 940 B230FT? I know that driving habits and conditions are a factor, but I'm only getting about ten MPG around town and thirteen to fifteen on the highway.

Oct 30th, 2023, 17:12	#6
Dirty Rooster Premier Member Last Online: Nov 23rd, 2023 14:26 Join Date: Jun 2014 Location: Haltwhistle	When my odometer was working I got 31mpg, but I don't do short runs. I assume I'm at 29-ish, might be rich, I'm thinking about getting a new water-temp-to-CPU sensor ... If I had a "thing" that told me I'm getting 10mpg around town I'd rip everything apart to find the fault! __________________ 1993 2.0 Turbo SE with 1991 2.0 Turbo engine. Older is better!

Nov 4th, 2023, 22:47	#9
baggy798 🤍💙💗 Last Online: Today 10:34 Join Date: Mar 2006 Location: Lichfield	You should be getting about 21 around town and 26-30 on a run. Surprised it hasn't thrown a check engine light. Plugs are going to be getting fouled up and bores washed down. __________________ MY97 940 CD LPT Super Sports Edition 2 Turbo, Midnight Purple, 175,000 miles.

Oct 28th, 2023, 15:29	#2
360beast Go redblock or go home Last Online: Today 14:24 Join Date: Feb 2012 Location: UK	That's awful, running way too rich. I get very low 20's around town and on a decent long motorway run at least 30mpg. Probably a worn out ECT.

Oct 28th, 2023, 19:50	#3
irishcarfan Master Member Last Online: Yesterday 21:11 Join Date: Jul 2009 Location: Dublin	Generally get about 280-300 miles out of a tank on our B230FK

Oct 28th, 2023, 22:40	#4
Forrest VOC Member Last Online: Today 11:08 Join Date: Feb 2008 Location: Gloucester	I usually reckon about 24-26 mpg on average. Better on a long motorway run. That’s B230FK with automatic transmission. The O2 sensor can lead to lower MPG. If it’s original it might be worth changing it.

Oct 29th, 2023, 14:59	#5
Mertz Member Last Online: May 26th, 2024 13:27 Join Date: Nov 2022 Location: Peterborough	Low 20s around town. 28-32 on a clear run.

Oct 31st, 2023, 18:05	#7
Chris1Roll Senior Member Last Online: May 26th, 2024 06:49 Join Date: Aug 2006 Location: Cannington	The use of the word 'highway' in the OP leads me to belive the poster might be in the US. In which case their figures will naturally be ~20% lower than UK mpg as their gallon is smaller. Still utterly appalling though!

Nov 4th, 2023, 13:52	#8
Chuck25624 New Member Last Online: Feb 1st, 2024 22:51 Join Date: Oct 2023 Location: Long Island, New York USA	Yes, I'm in the US. Should have made that clear.

Nov 5th, 2023, 14:14	#10
Chuck25624 New Member Last Online: Feb 1st, 2024 22:51 Join Date: Oct 2023 Location: Long Island, New York USA	No check engine light, no codes. Going to change the O2 sensor this week.

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