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Hello all,
I've got a 2006 Sorento EX 4WD that gets god awful gas mileage. I've tried everything between conservative driving to rebuilding the engine and I am still averaging 13MPG. I was wondering (and this is the strange part) if I could remove the rear driveshaft to improve gas mileage. I feel that by converting the car from 4WD to FWD I can save gas and just put the driveshaft back in for the winter. Any thoughts?
 

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08 2.5 CRDI Sorento Titan Auto
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1,838 Posts
Remove the rear shaft and you won't be going anywhere :( (It's rear-wheel drive by default). You could remove the front prop-shaft. If you have a pre-facelift also remove the fuse #13 ("TCCS") in the driver's footwell fuse box. That will disable the transfer case control unit. (On post-facelift the control systems/fuses are different and this doesn't work the same) However, I doubt it will improve your gas mileage that much. If your vehicle is TOD the front diff will still be connected to the front wheels. Nothing you can really do about that.
 

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2005 Sorento EX light blue, 2013 Lincoln MKZ Pearl White
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Hi, I pulled the front driveshaft and took the air filter "box" off and attached a round air filter element to the front of the mass air flow sensor. I noticed 2-3 mpg around town and 4-5 mpg on freeway. Simply re-install the original air box when you go in for a smog check
 

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2019 Kia Sportage. SX with AWD. 2.0L Direct Injected Turbocharged & Intercooled Gas.
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752 Posts
13 MPG sounds excessively low. Perhaps have a trusted mechanic look over the vehicle for obvious codes. For example, if your pre catalytic converter oxygen sensor(s) fail your fuel economy will suffer greatly. Any check engine lights on?
 
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