How accurate is your trip computer on MPG?
#1
Pole Position
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In my previous car (Maxima), I always found the trip computer to be almost honest, but about 1.5 MPG on the optimistic side whenever I did my own consumption vs miles calculations.
Has anyone experimented to see how accurate the IS trip computer is? It sort of behooves a car maker to "round up" (hehe) and make the mileage look better than it is (because you'll report MPG to friends/family/coworkers/internet forums etc) , so I always compare it to my own math.
I don't take delivery of my IS until Monday so I can't really do it yet obviously.
Has anyone experimented to see how accurate the IS trip computer is? It sort of behooves a car maker to "round up" (hehe) and make the mileage look better than it is (because you'll report MPG to friends/family/coworkers/internet forums etc) , so I always compare it to my own math.
I don't take delivery of my IS until Monday so I can't really do it yet obviously.
#3
Lexus Test Driver
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Mine is slightly optimistic. But not by much.
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#13
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By the way, I think I must have the only IS where the trip computer reads a worse MPG than a manual calculation. It seems that practically everyone else sees the opposite.
#14
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Mine just told me I got 31 MPG driving between DC and Philly... considering it's an IS350, I think it is optimistic... but I do like seeing that number on there ![Smilie](https://www.clublexus.com/forums/images/smilies/smile.gif)
If there's any truth to that number I'd be very excited... if I drove at a more reasonable pace I don't see why I couldn't squeeze another mile or two out of it.
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If there's any truth to that number I'd be very excited... if I drove at a more reasonable pace I don't see why I couldn't squeeze another mile or two out of it.
#15
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It was exactly this accurate on my IS350: