R50/53 Poor MPG for 06 MCS Auto
#1
Poor MPG for 06 MCS Auto
My wife tells me she's only getting about 13mpg.
I've changed the plugs, coil, plug wires, and performed all basic maintenance items.
Any idea what could be causing the poor mpg?
She does drive ONLY in stop and go traffic 99% of the time.
I realize that she should be getting lower mpg than normal but this sounds ridiculous!
My 5.5l AMG V8 motors get similar gas mileage in stop and go driving also!
I've changed the plugs, coil, plug wires, and performed all basic maintenance items.
Any idea what could be causing the poor mpg?
She does drive ONLY in stop and go traffic 99% of the time.
I realize that she should be getting lower mpg than normal but this sounds ridiculous!
My 5.5l AMG V8 motors get similar gas mileage in stop and go driving also!
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#7
Wonder if she has a dragging brake caliper....fairly common on the rears....
Drive around the block....try not to use the brakes...then see if one is hotter...
The fact she drives in "stop and go only" means unless she is pretty laidback, mpg is gonna be pretty crappy....
Drive around the block....try not to use the brakes...then see if one is hotter...
The fact she drives in "stop and go only" means unless she is pretty laidback, mpg is gonna be pretty crappy....
Here in Honolulu traffic in town is really bad during rush hour.
She drives only about 4-5 miles max but it's in the worst traffic.
But damn! 13-14mpg??? From a four cylinder???
By the way, can you point me to any rear brake discussion?
Wondering how you fix a dragging caliper?
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#8
superchargers are very thirsty in nature, going around my town ill get about 15 mpg, im also using boost, which is thirsty as well.
brake caliper drag is also another good idea to look at, just take a drive around the block, dont use any brakes, then if you can reach under the car and see if one of the calipers are warm and radiating heat, check the fronts as well for comparison. another way to check is if the pads are wearing differently side to side in the caliper and side to side on the rear.
to fix a dragging caliper, it needs to be rebuilt or replaced, same with the pads and the rotor
you could also take it for a normal drive not in traffic and see what kind of figures you get. traffic uses quite a bit of fuel
brake caliper drag is also another good idea to look at, just take a drive around the block, dont use any brakes, then if you can reach under the car and see if one of the calipers are warm and radiating heat, check the fronts as well for comparison. another way to check is if the pads are wearing differently side to side in the caliper and side to side on the rear.
to fix a dragging caliper, it needs to be rebuilt or replaced, same with the pads and the rotor
you could also take it for a normal drive not in traffic and see what kind of figures you get. traffic uses quite a bit of fuel
#9
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