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Lucky · 06-02-2010, 01:43 AM

Seems low, but if you drive it hard it could be accurate. Have you figured mpg by hand? Maybe the OBC is way off?

As a data point, my S gets right around 20 (calculated by hand) in mixed driving -- my worst tank has been 19.5. Best around 21. I don't have the OBC, so I can't comment on its accuracy.

06-02-2010, 01:43 AM	#2
Lucky Registered User Join Date: Aug 2007 Location: Virginia Posts: 244	Seems low, but if you drive it hard it could be accurate. Have you figured mpg by hand? Maybe the OBC is way off? As a data point, my S gets right around 20 (calculated by hand) in mixed driving -- my worst tank has been 19.5. Best around 21. I don't have the OBC, so I can't comment on its accuracy. __________________ -- John '00 Boxster S '86 911 Carrera Coupe (Sold)