I never thought of that - I get the same with my Dodge as well. Sometimes a bit less than amusing - I did over 9 hours of driving yesterday, in some horrible rain, flooded roads and mist from 2am yesterday, got home and two lads wanting to talk about how wonderful it was . . had to apologise and say I was tired after the miles I'd done and just unload the car. Although on the bright side, I got a record 26.8mpg on the dash display!
