My 2006 x3 with 30000 miles gets just 16mpg overall hiway and city. Its epa
rating is 17 city and 23 hiway. What gives? There is nobody in the car
except little old me and I drive 10 miles each day on the hiway.
You do not drive nearly enough highway miles to get the higher number. You
drive all of your miles in the city, for all practical purposes. If you
speed up quickly and wait until the last possible second to slow down again,
yur mileage is pretty good.
If you live near to the freeway, and have a 10-mile commute, then you spend
much of your drive with a cold motor, and this is bad on gas mileage too.
That plus the EPA figures are always over-optimistic. They aren't
obtained by real world driving but putting the car on a 'treadmill'
and mimicking the hwy and urban speeds. Even after that, it is not the
consumption of gas that is analysed, but the amount of CO2 output and
the consumption of gas is calculated indirectly from the CO2 output,
i.e. how much gas it would take to produce that much CO2! Even with
the most careful and economical driving habits, I doubt you will ever
match the epa figures!
You're completely wrong on this. My '01 330xi is rated 20/27 (this is the
pre-2007 ratings). I have never gotten lower than 22 mpg. I have gotten
as high as 31 highway, but more typically 28/29. My son has gotten 30
highway on his '07 335i, and it's rated 18/27 (new style).
You're right in that the EPA figures are bogus.
In addition to Jeff's reply, how are you calculating mpg? If it's using the
OBC, are you resetting after each fill-up, and have you measured and
accounted for any OBC error?
As my BMWs have always equaled or exceeded EPA figures when properly warmed
up and driven judiciously, I suggest you check highway MPG by filling the
tank, resetting the OBC, taking a nice 200 mile cruise on the highway in top
gear at about 65 mph and then checking your mileage. If you aren't getting
at least 25 mpg under those conditions, I'd have the car looked at by a good
I moved from the east coast to the west coast and drove my '01 330Ci.
Generally 10 over the speed limit the whole way with cruise control at
every opportunity. OBC average was 32 mpg. Go figure, German
I'm also somewhat surprised that my old 5 speed E46 can get the same 32~33
mpg on the highway as my '08 128i with it's overdrive 6th. Of course, the
128's Cd isn't as good, as it is a convertible, but the fuel economy of the
2.8/3.0 liter BMW 6 is definitely impressive.
BTW: The days of manual gearboxes seem to be over soon. (*) (**)
The new double clutch automatic gearboxes outperfom manuals in
performance AND in fuel economy.
It is just that this technology has no yet made its way down from the
high end into mid priced cars.
Sadly BMW currently limits these new gearboxes to some of their 330 and
(*) Ok, you must of course be willing to pay the higher price for that,
but once you have been using it you will never return to anything else
(classical automatic gearbox or manual).
(**) Porsche seems to have dropped manuals for the performance reasons.
There's no way it can better a well driven manual in economy. Equal,
possibly. But I doubt that since it has more moving parts and therefore
But many prefer a good manual because they enjoy the challenge of well
timed gearchanges and smooth clutch operation. In other words part of the
driving pleasure on a fine car. For those who prefer autos there's little
difference between traditional torque convertor types and DSG.
Personally I think the idea of a robotised synchromesh box flawed - no
matter how good the implementation.
*I don't suffer from insanity, I enjoy every minute of it *
Dave Plowman email@example.com London SW
Actually I found it rather rude to in two instances for two different
things you consider something as 'not shocking' with a nose in the air
haughty attitude. And further, the difference between imperial and us
gallons is rather insignificant compared to gallons/litres. So why did
you even bother asking.
Good for you. Like we are here in the states?
31 mpg for a 3 liter sports car is very good. I bet in the top 85th
percentile or better. Most are AMAZED at the mileage my car gets,
incorrectly thinking it must be a guzzler. You uppity Europeans might
not be impressed as 90% of you drive small displacement DIESELS.
Actually one of my cars has a 3.2 litre engine, the other a 2 l. Neither is
diesel; I do so few miles that it would not be economical to have oil
Yes, 31 miles per gallon (small) IS very good, sports car or not, for a
3-litre engine, but I could not understand what you meant by "shocking".
Try to remember this is written comms only.. Actually, the difference
between US and Imperial gallons is sufficient to make the 31 mpg sound even
better in Imperial.
And no, 90% of Europeans do not drive small-engined diesels. If North
Americans paid twice as much for their fuel they'd be reducing the size of
their engines too.
To send an e-mail directly replace "spam" with "schmetterling"
"thepixelfreak" < firstname.lastname@example.org> wrote in message
I get about 18 with my X5 4.8. Are you using premium gas? If you use
regular, the computer will compensate for it so the engine runs properly
but the fuel economy will drop. Is the air filter clean?
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