Auto Guide
2011 Cadillac STS
Used

Review and specifications

2011 Cadillac STS

The STS started out as an up-level trim of the midsized Seville, with a strong 4.6-liter V8, traction control, and an active suspension system. The STS accelerated faster than many of the performance cars of its day and even carved relatively crisp corners. However, in exchange for the better than average handling, it didn't ride particularly well. For 2005, Cadillac renamed the Seville the STS and switched to rear- or all-wheel drive, turning it into a genuinely competitive sports sedan. Power came from a 255-hp V6 or an ultra smooth 320-hp V8. The ride is firm but supple. The car is fun to drive and handles well, but rear-seat room is relatively tight and the interior doesn't measure up. The STS-V is a quicker supercharged version. Model year 2008 brought a 3.6-liter V6 as well as a few interior updates and 2011 was the final year.

Market value
$3,525
Fuel
Conventional
Transmission
Automatic
Seats
5
View listings Find dealers
Model year 2011
Owner rating Not rated
Reliability Not rated
Data updated June 4, 2026

At a glance

Model data

Overview

Powertrain
Conventional
Body style
sedan
Drive type
RWD
Transmission
Automatic, 6-speed
Category
Ultra luxury cars
Generation began
2005

Pricing

Current retail median
$3,525
Retail value range
$3,525 - $3,525
Original MSRP range
$47,280 - $56,380
Trade-in range
$985 - $985

Ratings

Road test score
77/100

Fuel economy

EPA city
17 MPG
EPA highway
26 MPG
EPA combined
20 MPG
Tested city
12 MPG
Tested highway
28 MPG
Tested overall
18 MPG
Annual fuel cost
$2,160
Cruising range
315 miles

Road tests

0-30 mph
2.5 sec
0-60 mph
6.4 sec
60-0 mph braking
133 ft
Avoidance speed
53 mph
Test status
Test Completed

Dimensions

Length
196 in
Width
73 in
Height
58 in
Wheelbase
116 in
Weight
4,000 lb
Maximum load
890 lb
Towing capacity
1,000 lb

Interior

Seating
5 people
Front head room
3 in
Front leg room
42 in
Rear head room
2 in
Rear leg room
27 in
Luggage
2+4+0

Environmental impact

Air pollution score
5/10
Greenhouse gas score
4/10
SmartWay
No

Brand context

About Cadillac

<p>Cadillac is a storied luxury brand from General Motors with a range of sedans and SUVs positioned above Buick, Chevrolet, and GMC. Its SUV line spans from compact options up to the full-sized Escalade. Several boldly designed EV models have excellent range, quick acceleration, and fast charging speeds. There’s also the V-Series, a line of performance versions available for several vehicles, which can compete with the best sports sedans from Europe. Most models are available with excellent driver assistance tech, including GM’s Super Cruise. Reliability is not strong point.</p>

Vehicle ID: 5768 First published: June 20, 2020 Updated: June 4, 2026

Values may vary by trim, options, location, and market conditions.

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