Last post on May 01, 2013 at 12:42 PM
You are in the Cadillac CTS/CTS-V
What is this discussion about?
Cadillac CTS, Cadillac CTS-V, Sedan
#136 of 266 Re: 2009 CTS Poor MPG [artmbgolf]
Feb 24, 2009 (10:50 pm)
I had a 2004 CTS and a 2006 STS, both with the 3.6L V6 and thought both performed well and had good gas mileage. In October, when I went shopping for a 2009 CTS I thought I would step up to the new 3.6DI. The dealer actually gave me the the car to take home for a 24 hour test drive. I immediately noticed 2 things. First the power increase was noticeable and almost more than necessary. But, secondly, I noticed a pronounced vibration which was very noticeable when the car was stopped at a light. You could feel it in the steering wheel, the brake pedal and even the seat, and you could hear it. I looked at the rpm's to see if I could notice why the car engine seemed to be so rough. But the rpm's looked normal. My wife could even feel this roughness in the passenger seat. But, I still thought this would simply require a minor adjustment, so I returned to the dealer with the intention of buying the car. When I was there, I spoke with the general manager about my impressions of the car and mentioned the engine roughness. And, to my surprise his reply was " Yes I know all about that, I drive one myself and it does the same thing. We can't do anything about it, it's just a characteristic of that engine".
So I left the car there and decided I would investigate this. I went on the internet and read every review I could find. Eventually I found 2 professional reviewers who loved the power of the DI but warned about roughness at idle and slow speeds. Please don't ask me for the reviews, it was 4 months ago and I don't remember.
Ok, so no DI engine for me! I then test drove the old reliable non DI engine and loved it. The power was more than adequate and the refinement was far superior.
As far as mileage goes, my history with Cadillac and the 3.6 V6, has taught me that initial mileage stinks, the mileage on my 2006 STS was still improving at 2 years and 25,0000 miles when I turned it back into the dealer.
My 2009 base CTS got about 10mpg in mostly city on the first tank. The first time I took it on the highway I couldn't get it above 24 mpg. At about 1000 miles I was able to get 26-28 mpg on highway. Now at 2000 miles, I just took a 20 mile trip on I-95 at about 65-70 mph and got 29.5 mpg. Now the city mileage is nothing to write home about, maybe 15 mpg. If you look at the Instant Mileage reading you will see it plummet when you accelerate. So a steady foot will dramatically increase mileage.
Sorry for such a long post, but other things to consider are the weight of the vehicle and the conditions you drive in. AWD adds about 200 lbs, sunroof adds 125lbs. additional options add more weight. I have the base car, doesn't even have the spare tire. Also, I live in South Florida, where the roads are flat, we are at sea level and the weather is always nice.
#137 of 266 Re: 2009 CTS Poor MPG [redgtconv1]
Feb 25, 2009 (7:21 am)
Thanks for the insight. I thought that I had also read somewhere that the 3.6DI had an inherent "design flaw" that caused the idle flutter or roughness, but can't find that blog again.
#138 of 266 Re: 2009 CTS poor mpg [blackcadillac]
Feb 25, 2009 (9:01 am)
Most cars need a break in period before the mileage normalizes. The gas mileage on my 03 CTS got better as it approached 10K miles. The same can be said for my TrailBlazer.
When my wife was driving the CTS 52 miles roundtrip to work on a daily basis, she was averaging 24 - 27 mpg. Now that she only drives 1 to 2 miles roundtrip, she averages 17 - 19 mpg. The engine barely gets to warm up and a car needs some highway miles to achieve better mileage. Trips to the mall (about 5 miles away) actually help raise her average mpg.
Give your CTS some time and don't worry.
#139 of 266 0-60 mph times
Feb 26, 2009 (11:25 am)
I only have approx. 2800 miles on car (2009 cts awd 265 hp engine, auto trans) so I haven't really opened her up yet. Can anyone provide realistic 0-60 mph times for me to expect in the future if I decide to "gas it up" Also, is anyone experiencing the front door stops not being strong enough to hold door open? Meanwhile I'm enjoying the hell out of the car. I forgot how much fun it is to take "the long way home." Getting approx. 17mpg around town, and approx. 26 hiway, no problems to report. Some of my past cars have included TR 3, 65 Beetle, 68 Beetle, 69 pontiac Lemans, 72 Pontiac Firebird 75 BMW 2002, 75 Cadillac Sedan de Ville 75 VW Scirocco, Dodge Omni, Mitsubishi Turbo-Eclipse, Chevy Trailblazer, Toyota Supra, Toyota Corolla, Honda Pilot. (OK, I'm not a kid) So I have a bit of car driving experience--The CTS is the best car I have ever owned!! Regards to everyone.
#140 of 266 Transmission whine in first gear automatic
Feb 28, 2009 (1:07 pm)
I just purchased an '09 black CTS. It is the base 3.6 engine with auto trans and RWD. I have 500 miles on the car. It has a whine in first but it is quiet in the other five gears. Is anyone experiencing the same or is this a characteristic of the car? I had an '05 CTS and I don't remember having a whine in first. It is not loud but noticeable. Thanks for responding.
Mar 03, 2009 (8:10 am)
Blackcadillac - any update on your MPG? Did you see what you can get on the highway driving around 55-60 MPG?
#142 of 266 CLIMATE CONTROL IN 2008 2009 CTS
Mar 03, 2009 (9:49 am)
I PURCHASED A NEW 2009 CTS THE END OF DECEMBER AND I POSTED A QUESTION IN REGARDS TO HOW THE CLIMATE CONTROL IS WORKING IN THE 2008 AND 2009 CTS.
I ONLY HAD ONE RESPONSE.
I WOULD APPRECIATE IT IF YOU GUYS OR GALS WOULD ANSWER MY POST AND LET ME KNOW HOW YOUR CLIMATE CONTROL IS WORKING WHEN ON THE AUTO MODE.
I LIVE IN SOUTH FL AND THE CAR GETS HOT WHEN IT SITS OUTSIDE. WHEN I START IT UP AND SET THE CLIMATE CONTROL AT 70 DEG.THE BLOWER WILL COME UP TO ABOUT MEDIUM SPEED FPOR A FEW MINUTES AND BEFORE THE CAR HAS COOLED DOWN,THE BLOWER SPEED SLOWS DOWN. I CAN BRING THE FAN SPEED UP MANUALLY OR LOWER THE TEMP TO 60 DEG AND THEN THE FAN SPEED COMES UP.
I HAD THE CAR BACK TO MY DEALER FOR THREE DAYS AND HE CLAIMS THAT IS HOW THE CLI,MATE CONTROL WORKS IN THE 08 AND 09 CTS.
HE TELLS ME HE CALLED CADILLAC TECH AND THEY ADVISED HIM IT IS WORKING PROPERLY.
I CALLED CADILLAC CUSTOMER SUPPORT AND COMPLAINED. I HAVE HAD CARS WITH CLIMATE CONTROL SINCE 1988 INCLUDING A 2005 CTS AND WHEN THE CAR WAS HOT INSIDE AND THE TEMP WAS SET AT BETWEEN 70 AND 74 DEG, THE BLOWER WOULD COME ON FULL BLAST AND SLOWLY SLOW DOWN AS THE CAR COOLED DOWN.
CADILLAC TECH TOLD ME TO TAKE THE CAR TO ANOTHER DEALER AND HAVE IT RE CHECKED. I HAVE NOT GOTTEN AROUND TO THAT YET,BUT I WOULD APPRECIATE HEARING IF ANY ONE ELSE IS EXPERIENCING THIS PROBLEM.
#143 of 266 Re: CLIMATE CONTROL IN 2008 2009 CTS [joey245]
Mar 03, 2009 (11:32 am)
Customer Service has not been a good source for answers to Technical questions or even to find out if a problem is a known problem. Their favorite answer is to see your dealer.
Right now most reading this are probably in too cold of a climate to see how their climate control functions in hot weather. Since you are in FL, an idea for you is to go to a dealer on a hot day and start up some CTS there to see if they function the same way as yours. This would not be the first auto feature on any brand, where some engineer tries to improvce something and makes it worse. It does make some sense that if the gap between the desired temp and the actual temp isn't too great, that the blower would run at less than full speed, either to reduce noise, save the blower, etc.
#144 of 266 Whine in first gear on my '09 CTS automatic 3.6 base engine
Mar 04, 2009 (12:06 am)
Someone with an '09 please refer to my previous post and tell me if you are having a whine in first. Every other gear is quiet. I just have 600 miles on the car and I want to know if this is a characteristic of the 6 speed transmission or not. Thanks.
#145 of 266 Re: Whine in first gear on my '09 CTS automatic 3.6 base engine [temj12]
Mar 04, 2009 (4:20 am)
I have no noise at all in my transmission....non DI, RWD.....11K on my 09