Another MPG Thread!

Hey all,

Have a question about my 328i about MPG. The last tank that I put into her the consumption worked out as 20.8MPG, its seem very low. It was all city miles and I havent been driving the snot out of her either. Its basically my trip from inchicore out to citywest to work and back everyday.

She has been recently serviced, and I checked last night to see if there was a seized caliper but all was okay. What are my options?

Suppose the best thing is probably to get codes read?

Just seems a tad low, both the e46 330i and the M3 that I had used to do better mileage than that!

If it was pure city driving, bumper to bumper then it would seem reasonable. I was getting 21 on commute from Ashtown to Park West but that was with heavy traffic

I'm open to correction on this, but I think the 328 has the highest emmission levels and is the heaviest engine for fuel consumption and because of this the NCT have their limits for the 3 series based on this engine. This is just what I heard to a question I asked when I got a conversion from a 318 to a 3.0 M3 engine a few years back in my e36, and I was concerned about cunsumption and emmissions!

Yeah it may just be the engine itself, just seemed a little low after the last two cars that I had had larger displacements. Maybe its just that they are more modern engines?

It doesnt really bother me too much, even at 20.8mpg, the tank still lasted me over three weeks ;) To be honest was expecting to be getting at least 25mpg or so out of her city driving but I take it this is normal then?

Newlands cross is bumper to bumper but apart from than its normal enough driving.

I had an e46 325ci and was lucky if I got 26-27 out of her on the motorway! Didn't really do a lot of city driving or combined though!

Quote:

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Originally Posted by Ketron

Newlands cross is bumper to bumper but apart from than its normal enough driving.

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MPG for a Prius at Newlands Cross would be 6-8mpg :hehe!::hehe!:

That does look a bit low to me, there could be something on its way out causing it to be heavy on juice

The 528 with the auto had an average of 25.8mpg when I checked last night, have yet to drive it so dunoo what type of driving that was but I was getting that from the 520 manual when I had it.

Seems very low for a car that doesn't weight that much for the size of the engine?

Cold mornings? Is it heating up right? What plugs did you put into it?

Quote:

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Originally Posted by ChrispyFish

The 528 with the auto had an average of 25.8mpg when I checked last night, have yet to drive it so dunoo what type of driving that was but I was getting that from the 520 manual when I had it.

Seems very low for a car that doesn't weight that much for the size of the engine?

Cold mornings? Is it heating up right? What plugs did you put into it?

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Yep its heating up right, starting from cold to and from work, takes me about a half an hour each way. The needle gets up to half way after about five minutes or so.

I put a set of Bosch sparkplugs in her, but this is the first tank I've paid attention to my mileage since I got her.

The only thing I can read is maybe a dodgy camshaft sensor? Might be over fueling? Prob best to wait to see if any codes are showing before I start replacing things?

Thanks lads
The 330i I had used to get 30-31mpg at 80mph on the motorway! around 25 tipping about town so getting a little over 20mpg seems rather low.

Quote:

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Originally Posted by Ketron

The only thing I can read is maybe a dodgy camshaft sensor? Might be over fueling? Prob best to wait to see if any codes are showing before I start replacing things?

Thanks lads
The 330i I had used to get 30-31mpg at 80mph on the motorway! around 25 tipping about town so getting a little over 20mpg seems rather low.

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Yeah it might be best to get the codes read. You should go on a motorway run and see what sort of mpg you get too.

I've moved offices so no longer bumper to bumper and im getting 34 on the mifty:happy:

Breathing better (performance filter), make sure all air sensors are cleaned, good plugs and you could try dipetaine as a possibility. You have very low miles on the clock other than that I would say maybe terra clean. Other than that taxi drive it I guess. Interested to know what the best mpg you could get out of that engine is.

Have a pipercross panel filter, might throw that into it at the weekend. I do have what I think is a sticky lifter, getting a ticking sound from the rear of the engine. Wouldn't surprise me as the car was sitting up for so long.

I'll try some diptane over the xmas, I'm actually hoping its throwing up codes, might make it easier to get to the bottom of it!

The last tank I got 260 miles from it, I'm hoping with just motorway driving I'll be able to see 400. Did 440 in the clubsport once, she was running on fumes though!

At the moment I'm getting worse mileage than the M3!

Quote:

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Originally Posted by Ketron

Have a pipercross panel filter, might throw that into it at the weekend. I do have what I think is a sticky lifter, getting a ticking sound from the rear of the engine. Wouldn't surprise me as the car was sitting up for so long.

I'll try some diptane over the xmas, I'm actually hoping its throwing up codes, might make it easier to get to the bottom of it!

The last tank I got 260 miles from it, I'm hoping with just motorway driving I'll be able to see 400. Did 440 in the clubsport once, she was running on fumes though!

At the moment I'm getting worse mileage than the M3!

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Check out the manifold that ticking could be the onset of a crack. At least it was with mine. Could also explain high consumption.