2006 Cadillac STS

$2,800

from

listings

$3K–$23K

price range

Download Infographic

Low$2,800

High$22,500

From$2,800

Avg Mileage105,000 mi

Fresh

Sourced from 15 active dealer listings as of May 2026

2006 Cadillac STS Trims

All Trims Combined

From$2,800

$3K–$23K

15 listings105,000 avg miles

From$12,900

4 listings|$13K–$23K

2006 Cadillac STS Pricing

Price Trend

3 data pointsAs of Mar 26

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Cadillac STS Safety & Reliability

Elevated

The 2006 Cadillac STS's elevated safety profile includes 4 recall campaigns and 141 owner-reported complaints. Make recall verification part of your pre-purchase checklist.

Recalls

141

Complaints

Crashes

Fires

Recall Findings

14V5420002014-09-09

FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP

General Motors LLC (GM) is recalling certain model year 2004-2007 Cadillac CTS-V vehicles manufactured October 6, 2003, to March 15, 2007, and 2006-2007 Cadillac STS-V vehicles manufactured June 23, 2005, to March 15, 2007. In the affected vehicles, the electrical terminals of the fuel pump module may overheat resulting in the melting of the flange material.

If the flange melts, a hole may be created allowing the fuel pump to leak fuel, causing the vehicle to stall, increasing the risk of a vehicle crash. Additionally, leaking fuel in the presence of an ignition source increases the risk of a fire.

View at NHTSA

07V5890002007-20-12

POWER TRAIN:AXLE ASSEMBLY:AXLE SHAFT:SEAL

ON CERTAIN PASSENGER VEHICLES, THE REAR AXLE PINION SEAL DOES NOT MEET ALL OF THE SPECIFICATIONS AND MAY EXPERIENCE A FLUID LEAK.

A REAR DIFFERENTIAL FAILURE MAY CAUSE LOSS OF MOTIVE POWER AND POSSIBLY LOSS OF CONTROL INCREASING THE RISK OF A CRASH.

View at NHTSA

06V0200002006-25-01

FUEL SYSTEM, GASOLINE:DELIVERY

CERTAIN VEHICLES EQUIPPED WITH V6 ENGINES MAY HAVE A CONDITION WHERE FUEL IS NO LONGER SUPPLIED TO THE ENGINE. THIS CONDITION OCCURS WITHOUT THE ILLUMINATION OF THE FUEL LEVEL LOW INDICATOR LIGHT OR THE WARNING CHIME.

IF THE ENGINE STOPS RUNNING, THE OPERATOR WILL NOT BE ABLE TO RESTART THE VEHICLE WHICH COULD INCREASE THE RISK OF A CRASH.

View at NHTSA

View all 4 recalls

06V0070002006-13-01

VEHICLE SPEED CONTROL

ON CERTAIN PASSENGER VEHICLES EQUIPPED WITH ALL WHEEL DRIVE AND A 3.6L V6 ENGINE, THE TORQUE MONITORING FUNCTIONS OF THE ELECTRONIC THROTTLE CONTROL (ETC) ARE NOT ENABLED. THESE FUNCTIONS CAN LIMIT ENGINE SPEED AND TORQUE IF UNUSUAL ENGINE CONTROL MODULE (ECM) HARDWARE OR SOFTWARE FAILURES OCCUR.

WITHOUT THESE FUNCTIONS ENABLED, A PERSISTENT ECM FAILURE COULD RESULT IN A THROTTLE OPENING GREATER THAN COMMANDED BY THE DRIVER AND A CRASH COULD OCCUR.

View at NHTSA

Source: National Highway Traffic Safety Administration (NHTSA)

Top Complaint Areas

The 2006 Cadillac STS has accumulated 141 NHTSA complaints over 1 years, with air bags leading the pack. Know what to look for before you buy.

01Air Bags44

02Engine8

03Power Train8

04Electrical System7

05Fuel/propulsion System6

141 total across 1 model years (2006–2006)Full data at NHTSA.gov

Cadillac STS Fuel Economy

17–19mpg combined

14-16city

21-25hwy

$2,300-$3,400/yr

With 4 configurations tested, the 2006 Cadillac STS ranges from 17 to 19 MPG combined. That's a 2 MPG gap that can add up to hundreds of dollars a year in fuel costs.

By Trim

STS - Automatic (S5)

19mpg

3.6L 6-cyl · Rear-Wheel Drive

16 city25 hwy~$2,300/yr-1/10 Poor

STS - Automatic (S5)

18mpg

4.6L 8-cyl · Rear-Wheel Drive

15 city24 hwy~$3,200/yr-1/10 Poor

STS AWD - Automatic (S5)

18mpg

3.6L 6-cyl · 4-Wheel or All-Wheel Drive

15 city23 hwy~$2,450/yr-1/10 Poor

STS AWD - Automatic (S5)

17mpg

4.6L 8-cyl · 4-Wheel or All-Wheel Drive

14 city21 hwy~$3,400/yr-1/10 Poor

Source: U.S. Environmental Protection Agency (EPA)

Where to Find 2006 Cadillac STS

14States

41%in top 3

If you're near Illinois, you're in luck: 17% of listings are there. But with 14 states represented, there's likely one near you too.

ILIllinois

517%

TXTexas

414%

GAGeorgia

310%

NCNorth Carolina

310%

INIndiana

27%

WAWashington

27%

COColorado

27%

FLFlorida

27%

MAMassachusetts

13%

MIMichigan

13%

WIWisconsin

13%

KSKansas

13%

PAPennsylvania

13%

LALouisiana

13%

Geographic distribution reflects all active listings for this model, not just 2006.

Buying a 2006 Cadillac STS?

Answers to common buyer questions

Is the 2006 Cadillac STS a good car to buy?

The 2006 Cadillac STS has 4 recalls on record. There are 4 recalls on record, so check that they've been completed before buying. The most commonly reported issue area is air bags, which is worth inspecting during a test drive. Review the safety data and pricing breakdown above.

Are there recalls on the 2006 Cadillac STS?

There are 4 documented recalls for the 2006 Cadillac STS. Don't let that scare you; most are routine. Just make sure they're all resolved before you sign. Details in the safety overview.

What's the gas mileage of the 2006 Cadillac STS?

Fuel economy ranges from 17 to 19 MPG combined. If you drive 15,000 miles a year, that gap is worth about $325 annually. See the fuel economy section for per-trim data.

What are common problems with the 2006 Cadillac STS?

AIR BAGS is the number-one complaint area for the 2006 Cadillac STS, based on 141 NHTSA filings. During a test drive, pay extra attention to this system. See the known issues section for the full breakdown.