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Cadillac Sts Problems

The Cadillac STS was a midsize luxury sedan sold from 1998 to 2011, serving as Cadillac's sport sedan offering. With 1,218 complaints and no recorded deaths, the STS offered rear-wheel or all-wheel drive with available Northstar V8 power. The first generation (1998-2004) evolved from the Seville STS, while the second generation (2005-2011) was a clean-sheet design competing directly with the BMW 5 Series.

1,218
Total Complaints
2
Total Recalls
14
Model Years
0
Reported Deaths
!

Years to Avoid

These years have significantly more complaints than average.

2006 2005
✓

Best Years

These years have the fewest reported problems.

1998 1999 2000

Common Problem Categories

Air Bags 212
Electrical System 172
Engine 100
Power Train 94
Fuel/propulsion System 66

Complaints by Model Year

All Model Years

Year ↓ Complaints Recalls Crashes Fires Rating
2011 18 0 2 0 Good
2010 12 0 0 0 Good
2009 46 0 14 0 Average
2008 154 0 14 6 Below Average
2007 134 1 16 0 Below Average
2006 394 1 56 28 Avoid
2005 290 0 40 14 Avoid
2004 18 0 2 0 Good
2003 30 0 2 0 Good
2002 20 0 0 0 Good
2001 34 0 0 0 Good
2000 30 0 2 2 Good
1999 32 0 0 2 Good
1998 6 0 0 0 Good

Cadillac Sts Years to Avoid

The 2006 second-generation STS accumulated the most complaints with issues including timing chain problems on the 3.6L V6, electrical glitches, and suspension component failures. The first-year redesign needed refinement. The 2005 and 2007 models shared similar concerns.

Best Cadillac Sts Years

The 1998-2000 Seville STS offered the refined Northstar in an elegant package. For the second generation, the 2008-2011 models resolved most early issues. The STS-V with its supercharged Northstar is rare and desirable for collectors.

Frequently Asked Questions

Does the STS have Northstar problems?

The first-generation STS (1998-2004) used the Northstar V8 with known head gasket concerns, though improved from earlier Northstars. The second-generation offered both V6 and Northstar V8 options. The 3.6L V6 had its own timing chain issues.

What is the STS-V?

The STS-V (2006-2009) featured a supercharged Northstar V8 producing 469 horsepower, making it the most powerful Cadillac of its time. Production was limited to about 2,500 units. The STS-V combined luxury with genuine sports sedan performance.

Is the STS reliable?

The STS has average reliability. The 3.6L V6 timing chain and Northstar head gasket are the major concerns. Well-maintained examples can be dependable, but budget for potential repairs on these complex vehicles.

How does the STS compare to the CTS?

The STS was larger and more traditional luxury-focused, while the CTS was sportier and more driver-oriented. The CTS proved more popular and received more development resources. The STS was discontinued while the CTS continued.

Is the STS a good value?

The STS offers substantial luxury for modest used car prices. However, repair costs remain Cadillac-level regardless of purchase price. Inspect any potential purchase carefully and budget for maintenance.