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Old 09-13-2012, 07:25 AM
Tom K. Tom K. is offline
Officially Welcomed to the 'Fest
Location: Maryland
 
Join Date: May 2008
Posts: 2,561
Mein Auto: '07 328iT.'13 Boxster
EPA highway is 28 (27 for automatic) so your mileage seems to be OK. My '08 MT 128i 'vert has averaged 27.5 over 40k miles with 80% highway driving using 93 octane - but this falls off by about 10% when using A/C and another 3% with E10.

Also, are you using the OBC or true calculated mpg? And don't forget to check the odometer accuracy - mine actually under-reads by nearly 2%.

Tom.

Last edited by Tom K.; 09-13-2012 at 07:29 AM.
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