2721RE: [Cadillac_Performance_Association] Re: Crappy Gas Mileage 2008 CTS (AWD)
- Apr 6, 2009I also have the 2008 CTS with the 3.6l DI and have no problems with the idle, but I do live in very warm weather all year long, maybe you need to move down here to the Key West. William
From: Cadillac_Performance_Association@yahoogroups.com [mailto:Cadillac_Performance_Association@yahoogroups.com] On Behalf Of James D Hufton
Sent: Monday, April 06, 2009 12:33 PM
Subject: RE: [Cadillac_Performance_Association] Re: Crappy Gas Mileage 2008 CTS (AWD)
I have a 2008 CTS with the 3.6L DI engine but without AWD. I usually drive my car in a “spirited manner” and am consistently getting 18.5 MPG as measured by the on-board trip computer in the car. I have not reset the long term average MPG function for at least a year, so it is truly giving me a indication of the long term mileage I am getting.
Most of the time I am driving short trips and with the cold winter we have been having, the engine is often cold when I start out.
I have a question for those with the 3.6L DI engine: do you occasionally experience episodic (e.g. comes and goes while the car is stopped and idling) rough idle when stopped at a traffic light? I recently had to have the oxygen sensor replaced, and noticed that the rough idle episodes continue even after having the sensor replaced. It almost seems that the problem might be related to the climate control system cycling the air conditioner compressor to dehumidify the air (it certainly isn’t warm enough in the Chicago area lately to be running the AC full time). If anyone knows what causes this I would be interested in hearing about it.
From: Cadillac_Performanc e_Association@ yahoogroups. com [mailto:Cadillac_ Performance_ Association@ yahoogroups. com] On Behalf Of Mike
Sent: Monday, April 06, 2009 9:25 AM
To: Cadillac_Performanc e_Association@ yahoogroups. com
Subject: [Cadillac_Performan ce_Association] Re: Crappy Gas Mileage 2008 CTS (AWD)
--- In Cadillac_Performanc e_Association@ yahoogroups. com, "scottm9704" <scottm9704@. ..> wrote:
>engine and I can't
> I have a 2008 CTS (AWD) with the direct injection
> seem to get more than 15.5 MPG in combined city andhighway driving. To
> be more precise, my daily commute is about 30% cityand 70% highway and
> I'm still getting only 15.5 MPG. I've been dealingwith my dealer and
> with Cadillac and they are helping me--they justwant me to go away.
>anyone looking at the vehicle
> Any suggestions out there? I would tell
> to pass on it. GM is hurting, and likeidiots, they aren't taking care
> of the very people that can help themturn the corner. All in all, I am
> extremely disappointed withCadillac's level of customer service.
>I have a 2009 CTS4 (not DI engine) and my mileage is around 21 mpg average. Don't get mad but so many times when poor mileage is the complaint it can often be traced to how the owner drives. Using the shift feature a lot, fast take offs, idling and speeding all contribute to lower mpg. Are you using the remote start to warm up the car? That is going suck gas and contribute to low mpg. A car burns more fuel when the engine is cold and if you are just idling it and not driving, you are losing economy. The price you pay for comfort.
A friend also has a 2009 AWD and she says she get around the same as I do and she only drives it about 20 miles a day back and forth to the office. Her car only has 3,000 miles on it and she just loves the car as do I. I had a 2005 CTS also.
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