My 2007 Honda Fit has recently seen a drop in mileage... I used to get 620km (387mi) per tank in summer at 90km/h (56mph) but now I get about 560km (350mi) under the same conditions. I have fresh oil, new air filter, new spark plugs and coil packs. Can anyone recommend other things to check as a possible cause for this? Driving style has been kept constant.

 

Check tyre pressures and, after driving, check you do not have a hot wheel. That could indicate a brake rubbing.

 

Check valve clearance, too. Do it NOW before you burn a valve.



Our Fit w 135K miles on it, just achieved 39 MPG on a 250 mile trip. <---incentive

 

Tires 36psi all around. No seized calipers or rubbing brakes

 

Hmmmm according to the owner's manual I should have done this 2-3 years ago but when I brought it to the shop they said there's no point. Also doesn't it cost $600-$1000 to do this? I'll have to read up on this issue

 

The valves in the 1.5L engines DO require periodic adjustment.

I've done ours myself every 60K miles and several were out-of-spec each time.


It took me 2 - 3 hrs each time, but I'm an amateur. An independent Honda specialist could do it for you for a LOT less than a dealer.

 

When I paid an independent shop to do a valve adjustment on both my S2000 & my ex-wife's Fit, it was around $200 per car.