My replacement Yaris gets much worse MPG? - Toyota Yaris Forums

Amdkt7 · 06-17-2013, 10:44 AM

Perhaps run some SeaFoam through it. Could be dirty injectors.
Things to check:
Brakes binding
Wheel bearings binding
Exhaust pipe damaged causing restriction
Catalytic converter clogged
Wheel alignment causing excess drag.
Excessively tight belts.
Air compressor not disengaging
problems with the transmission (shifting late, torque converter not engaging properly, slippage).

Put it up on secure jacks and start the engine in gear to spin the front tires. Note how quickly they slow down when you put it back in neutral.

Turn the rear wheels by hand, note how much drag is on each wheel.

Some tires really suck for FE.

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06-17-2013, 10:44 AM	#10
Amdkt7 Returning to Toyota Drives: 2013 L 3dr MT Join Date: Mar 2013 Location: Nashville, TN Posts: 154	Perhaps run some SeaFoam through it. Could be dirty injectors. Things to check: Brakes binding Wheel bearings binding Exhaust pipe damaged causing restriction Catalytic converter clogged Wheel alignment causing excess drag. Excessively tight belts. Air compressor not disengaging problems with the transmission (shifting late, torque converter not engaging properly, slippage). Put it up on secure jacks and start the engine in gear to spin the front tires. Note how quickly they slow down when you put it back in neutral. Turn the rear wheels by hand, note how much drag is on each wheel. Some tires really suck for FE.