MPG versus air temperature and Altitude

MensaMike MPG versus air temperature... 06-10-2011, 08:13 PM

mustangdave My daily commute is at... 06-12-2011, 06:21 AM

Talley The reason you lose 10% in... 06-14-2011, 02:43 AM

DTMAce Talley, I will most... 06-14-2011, 04:10 AM

BDC Absolutely not true.... 06-15-2011, 12:07 AM

bates I'm going to take this from a... 06-19-2011, 07:04 AM

zdre @bates Exponential increase... 06-21-2011, 05:16 AM

06-10-2011, 08:13 PM	#1
MensaMike Junior Member Join Date: Jun 2011 Posts: 1	MPG versus air temperature and Altitude Correction to my previous comment re my 1993 Infiniti G20. A drop of about 40-50 degrees F causes an INCREASE in air density and hence drag of about 10% (air about 300 degrees Kelvin). This results in a DROP in MPG of about 10%. I noticed this on one unusually cold night trip from California to Phoenix. Anyone else have data on this? Also; anyone noticed better MPG at higher altitude due to lower air density/drag? Mike J

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