Poor MPG

[ofis_2311]

Hey everyone I have a bmw z4 3.0si and is it normal for the car to have a gas range of 200 miles? Sometimes less like 190 full tank?

[Scubaregs]

Depends how you drive it. This is a mainly British site, we use petrol and our gallons are different from yours as I'm guessing you are in the states.

[mmm-five]

In general, a normally-driven 3.0 litre should get over 400 miles to a tank (even an ///M can get over 300 miles) on a run.

However, short trips when cold will give you considerably less MPG as will doing the traffic light grand prix at every opportunity (i.e. my M can get 30 UK mpg on a run, or 17 UK MPG in stop-start traffic around town).

Automatics will also deliver slightly less MPG than manuals.

[lucasxdiniz]

Hey everyone I have a bmw z4 3.0si and is it normal for the car to have a gas range of 200 miles? Sometimes less like 190 full tank?

I used a 3.0si Coupe as a daily for almost 2yrs. Generally speaking I got the following as my fuel economy:

- Normal motorway journeys sitting at a steady 70mph - 38-41mpg.
- Optimal conditions and being economical on the motorway - 48mpg.
- Combined - 30mpg
- Weekend trips (120miles of motorway and 80 miles or so of hooning) - 23-25mpg
- Hoons - 17mpg.
- Town only - 23mpg (plenty of unnecessary acceleration and rev matching because cool sounds).

Imperial mpg, obviously.

[NS66]

I have a 2.5 and generally get 33/34 mpg and have had close to 40 mpg on a good run - and thats with not trying really!!

[Mr Tidy]

As others have said you should get at least 300 miles from a tank in a 3.0Si.

From tine to time both mine would show a range of 400 miles after filling up, but I never managed as many as that!

[r3vmatch]

Pure highway, 70 MPH with cruise control, 6SPD, ~32-34 MPG (US gallons) on 93 octane fuel . I drove the car across several states when I first got it so I had opportunity to see what the car does MPG-wise on a long, uninterrupted trip.

I get less fuel economy with 91 octane (thanks California) and city / start-stop driving.

But the fuel tank seems very small, I could almost see the fuel needle move as I was driving, very odd. Amusingly Jeremy Clarkson mentioned the small fuel tank in the Top Gear review of the S2000(Clarkson) / Z4(Hammond) / Cayman(May).

[deltasierra]

2.5si roadster 6 sp auto 33-35 mpg long term average, according to the dash display, I’ve never cross checked that with actual miles driven but it always seems pretty economical to me.

[buzyg]

200 miles on a standard tank is poor indeed. Even in town.

[Rucky]

could be all sorts of reasons, read codes for obvious faults. Carry out a fuel consumption run - you should be able to see instantaneous consumtion as well as trip consumption. Check / change the aircleaner? Put some injector cleaner through it?
Vanos solenoids?
Take your big right boot off and drive in socks, Done floor itall the time despite the temptation - ...........

[darich]

2007 3.0si coupe. Over 1700 miles I've averaged 32.5mpg. My last tank was 36mpg.
Lots of variables to consider such as weather, tyre pressure, even tyre brand/type.

[Abbas]

Hey everyone I have a bmw z4 3.0si and is it normal for the car to have a gas range of 200 miles? Sometimes less like 190 full tank?

I used a 3.0si Coupe as a daily for almost 2yrs. Generally speaking I got the following as my fuel economy:

- Normal motorway journeys sitting at a steady 70mph - 38-41mpg.
- Optimal conditions and being economical on the motorway - 48mpg.
- Combined - 30mpg
- Weekend trips (120miles of motorway and 80 miles or so of hooning) - 23-25mpg
- Hoons - 17mpg.
- Town only - 23mpg (plenty of unnecessary acceleration and rev matching because cool sounds).

Imperial mpg, obviously.

This is really helpful.

I don't drive my car everyday or do many long drives in it. I usually pop to the gym in it after a work or grab groceries. 3-4 mile round trip most evenings. My average MPG is low 20's. On a weekend I might go for a hoon, or the odd 50 mile round trip or so on the motorway to the office. etc

Not sure that's good or bad?! I feel like even on the motorway I probably get 25-30. A full tank probably says about 300miles on my dash

[Mr Tidy]

Pure highway, 70 MPH with cruise control, 6SPD, ~32-34 MPG (US gallons) on 93 octane fuel.

But the fuel tank seems very small, I could almost see the fuel needle move as I was driving, very odd.

That's equivalent to around 38-40 mpg in UK gallons which seems pretty good!

But you're right about the tank being small. It's only 55 litres compared to the 63 litre tank in my 3 Series. It's even more annoying since I bought my MC, because it likes a drink!

[buzyg]

Pure highway, 70 MPH with cruise control, 6SPD, ~32-34 MPG (US gallons) on 93 octane fuel.

But the fuel tank seems very small, I could almost see the fuel needle move as I was driving, very odd.

That's equivalent to around 38-40 mpg in UK gallons which seems pretty good!

But you're right about the tank being small. It's only 55 litres compared to the 63 litre tank in my 3 Series. It's even more annoying since I bought my MC, because it likes a drink!

And all the better for it.

[StudioWizard]

I have a 2005 2.5i and I'm getting about 21 mpg in the city and maybe 27/28 on the highway. I've felt that's pretty low, but my mechanic says it's about right. Mine's a 5-speed auto and I drive it moderately conservatively. I'm in the US and using 91 octane.