Overview & Reviews

Cadillac's full size sedan is all new for 2005, rounding out the luxury marque's self-proclaimed renaissance with a bevy of performance-oriented credentials, including rear-wheel drive and two powerful engine options. Cutting-edge styling, lavish interior appointments and available all-wheel drive have brought GM's flagship up to par with the best Europe and Japan have to offer.

• Full-size car at a midsize price, nimble road feel, powerful engine options, available all-wheel drive, optional Bose stereo is one of the best in its class.

• Sporty bucket seats might be a bit firm for some, plastic interior panels not quite up to German standards, only one transmission available.

User Reviews:

Showing 1 through 10 of 138.00

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  Comfortable ride, good performance, clean styling - 2005 Cadillac STS
  By SLG - September 23 - 11:22 pm

  My 2005 STS Norstar V-8 since it was new. Currently it has almost 80,000 miles. There were a few minor mechanical problems when new, all covered under warranty, but over the last several years the repairs have been minimal, or just routine maintenance. The car has very good handling, braking and acceleration for a luxury car, and plenty of room to ride very comfortably, which makes road trips no problem. With the Norstar V-8 it has plenty of power, but without sounding like a "boy racer."

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  Beautiful but many costly repairs. - 2005 Cadillac STS
  By Linda Noonan - July 24 - 10:13 pm

  I loved the look and smooth ride. I bought my STS with 7K miles, certified pre-owned with extended warranty. At 18k miles the fuel pump went then 33K miles the water pump went after that it was something BIG each year. Cat converter replaced, intake position sensors, replaced vent solenoid, motor mounts, right & left lower control arms just to list a few. (seriously!) Transmission started clunking especially while driving slow or going from reverse to drive. Always garaged and maintained, I had to stop the $ bleeding at 85,000 miles when the transmission/drive train was about to drop out. The Cadillac dealer said new drive train $3,500 and there would be possible other issues. Im done with Cadillac, this was my third, my beautiful Eldarado had mechanical troubles as well. Too bad, they were such beautiful LOOKING cars. Perhaps it is the aluminum North Star engine? Since my experience I have heard of others having numerous problems with this system.

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  Good and Bad :( - 2005 Cadillac STS
  By ahmaduhhs - October 23 - 4:24 pm

  Owned the 2000 STS, 2001 STS, 2002 STS, 2003 STS and now the 05 STS. The interior is shameful compared to the 98-04 STS. The exterior however is marvelous particular the front and back end. Lots of standard features love the power of the V8 N*. Heard the V6 was no good :(

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  Fast Luxurious car, bad on car though - 2005 Cadillac STS
  By remyb - April 9 - 4:51 am

  75,000 miles and no problems yet, steering wheel is cracked though, lots of plastic inside but it looks ok

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  Reliable Beauty - 2005 Cadillac STS
  By Ed - November 28 - 2:00 am

  In 2005 I leased my 5th (and final) one. I love the car. Comfortable, powerful and classy. But sad to say, Cadillac decided to discontinue the model. I have been driving these cars (SLS and STS)for over 15 years and never had any major problems. Except for normal wear of consumables. My 2005 has never had to be tuned, and continues to run like a dream. Thats reliability.

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  Do not buy a Cadillac - 2005 Cadillac STS
  By jct - November 6 - 2:00 am

  We bought the car with 16,000 miles on it and right away we found out the car needed new tires and the wheels were way out of alignment and shortly after had a problem where it wouldnt start after filling it up with gas and had to get that fixed. at around 50,000 miles trans started to go out and finally went out at 77,000 miles and got that fixed. The same day we got the trans fixed the ac compressor froze up and it started spitting antifreeze out all over.

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  My Second Favorite Car Ever - 2005 Cadillac STS
  By Tim - June 18 - 7:27 pm

  Ive always been a loyal Mercedes fan. Had a 500E which was my absolute favorite car. However, it was so unreliable and a fortune to repair. I decided to give a Seville a try, so I opted for a 2002 Seville SLS. I drove that for a few years and had no problems with it whatsoever. I was impressed with the Northstar engine and power, although it was a little soft and "grandpa" like for me. I saw a 2005 STS V8 and decided to test drive. I fell in love and purchased. It is much more sporty, handling more like a Mercedes than ever imagined. It is very comfortable, similar to Seville but not as soft, fast, a head- turner, reliable and oozes class! Not one problem so far. Absolutely love it!

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  Average - 2005 Cadillac STS
  By Slee - March 23 - 7:43 am

  I bought the STS because it fit our wants when shopping used cars: luxury, comfort, cheap. Poor resale value has worked just fine for us since we can buy a little more car for the money on the used market. Overall, I like the styling of the STS inside and out. Many prefer the CTS in both respects, but I prefer the toned-down design of the STS. I am not normally an extended warranty fan, but anybody considering the STS would be wise to find one under factory warranty, or in the case of a 2005 or 2006, a factory CPO warranty. Many little problems crop up. Take reviews here with a grain of salt. The high-end stereo is NOT all that and is easily trumped by a decent aftermarket ones.

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  Great Car - 2005 Cadillac STS
  By JD - February 16 - 5:00 pm

  This is my first STS had a Toyota Avalon and really there is no comparison.This is so much more car in every respect, it is definitely not boring which is about the best thing I can say about the Avalon. I have the Northstar V8 it is fast. Love the interior except for the glove box.Nav works well and the AWD is great in snow and ice. I use the voice features to do almost everthing for me. I do not like the 2 different size tires. The fact that it is hard on tires is about my only complaint. Like all the bells and whistles more than you know you have.

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  Florida STS Finds Happy Home in Canada - 2005 Cadillac STS
  By Roger Wyatt - February 4 - 6:40 pm

  I have been a Caddyman for a few years now and my first drive was a 1500 mile trip from Fort Lauderdale.The ride was not as soft as my 02 STS but was solid....this car can handle as it is equipped with the performance upgrade.The V6 sprints down the interstates with ease.The powerplant performs very well,transmission shifts are not noticeable at all.The interior is well laid out and being 6-4 and 270 I had no trouble in finding a comfortable driving position. The navigation system is easy to read with the big screen and the 5.1 stereo system is wonderful.I do notice a marginal difference in power from the 02 northstar V8 but the V6 had no trouble in performing a quick passing maneuver.