Cadillac STS Cadillac STS 2006 Mercedes-Benz SLK Mercedes-Benz SLK 2009
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Cadillac STS vs. Mercedes-Benz SLK Price Comparison (MSRP)

The sticker prices, before adjusting for remaining feature differences. Usually these are the numbers you will see on the window stickers.

Models in short supply often sell at or even above these prices.

Cadillac STS vs. Mercedes-Benz SLK Invoice Comparison

Lowest Total Price: $73,035

Mercedes-Benz SLK SLK55 AMG   
Difference: $2,855

Lowest Total Invoice: $68,054

Mercedes-Benz SLK SLK55 AMG   
Difference: $2,470

Calculate Payments

  Down Payment Interest Rate Term
Model Year20062009
ModelSTSSLK
TrimSTS-VSLK55 AMG
Body4dr Sedan2dr Hardtop conv.
Base Price $73,070 $65,700
Base Invoice $67,704 $61,101
Lighting Package   1,030
Multimedia Package   2,980
Metallic paint (extra cost)   720
Automatic climate control, front   730
Lighting Package   958
Multimedia Package   2,771
Metallic paint (extra cost)   670
Automatic climate control, front   679
Options (change) 0 5,460
Options (change) 0 5,078
Destination 720 875
Gas Tax 2,100 1,000
Total Price $75,890 $73,035
Total Invoice $70,524 $68,054

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While we strive for accuracy, the site is not error-free, and prices can change at any time.

Dealer Price Quotes

Want to find out how much dealers are willing to discount these cars?

Request free, no-obligation Cadillac STS dealer quotes or Mercedes-Benz SLK dealer quotes from dealers using our car quote form.

The process is easy and takes just a minute or two. You'll receive price quotes from local approved dealers within 48 hours.

TrueDelta Value Comparison: Cadillac STS vs. Mercedes-Benz SLK

Lowest Adjusted Price and Invoice: Mercedes-Benz SLK SLK55 AMG
TrueDelta Adjusted Price Difference: $6,715
TrueDelta Adjusted Invoice Difference: $6,067
Model Year20062009
ModelSTSSLK
TrimSTS-VSLK55 AMG
Body4dr Sedan2dr Hardtop conv.
Engine469hp V8355hp V8
TransmissionT6T7
DrivetrainRWDRWD
EPA Fuel Economy (city/highway)14/20 MPG14/22 MPG
Audio (watts, speakers)300, 15380, 11
Tire (rear if not all the same)255/45-18225/40-18
Total Price$75,890$73,035
Adjustments for Features0-3,860
Feature-Adjusted Total Price$75,890$69,175
Total Invoice$70,524$68,054
Adjustments for Features0-3,597
Feature-Adjusted Total Invoice$70,524$64,457

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Features Comparison: Cadillac STS vs. Mercedes-Benz SLK

Model Year20062009
ModelSTSSLK
TrimSTS-VSLK55 AMG
Body4dr Sedan2dr Hardtop conv.
Transmission and Drivetrain 
6-speed manually-shiftable automatic$1100 
7-speed manually-shiftable automatic $1200
RWD$0$0
Accessories 
Heated steering wheel$100 
Power rear side windows$200 
Proximity key$250 
Remote start$150 
Remote window/roof operation $15
Wind blocker, small $100
Brakes, Airbags, and Other Safety 
Knee airbag, driver $75
Knee airbag, passenger $75
Obstacle detection, rear$250 
Side curtain airbags$350 
Tires, run-flat$150 
Cargo Management 
Cargo net$40 
Rear seat pass-through$100 
Climate Control 
Rear air vents with manual controls$150 
Residual heat $50
Drivetrain 
Limited-slip rear differential$300 
Exterior 
Body kit $0
Laminated front side windows$200 
Power retractable hardtop $6750
Infotainment 
Aux input $50
iPod integration $100
Media drive $15
MP3-compatible player $50
Satellite radio $200
Instruments, Lights, and Mirrors 
Analog clock $25
Auto-dimming headlights$200 
Cornering lights $50
Fog light, rear $100
Illuminated visor mirror, driver$50 
Illuminated visor mirror, passenger$50 
Mirror tilt-down in reverse $25
Visor mirror, driver $10
Visor mirror, passenger $10
Seats and Interior Trim 
Aluminum trim $100
Center armrest(s), second row$50 
Heated second row seats$200 
Memory system, passenger seat $150
Upholstered instrument panel, leather$1000 
Wood trim$300 
Suspension, Wheels, and Tires 
Alloy wheels $350
Auto-leveling rear shocks$200 
Performance steering system (optional)$0 
Polished alloy wheels$350 
Transmission 
Steering-wheel-mounted transmission controls $100
Total Value of Features$5,740$9,600
Value of Feature Adjustments$0$3,860
Value of Feature Adjustments0-3,597

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See a complete comparison of Cadillac STS vs. Mercedes-Benz SLK features.

Specifications Comparison: Cadillac STS vs. Mercedes-Benz SLK

Model Year20062009
ModelSTSSLK
Body4dr Sedan2dr Hardtop conv.
Wheelbase116.4 in95.7 in
Length196.3 in160.7 in
Width72.6 in70.4 in
Height57.6 in51.0 in
Curb Weight4,233 lb.3,420 lb.
Fuel Capacity17.0 gal.18.5 gal.
Row 1 Headroom38.7 in37.9 in
Row 1 Shoulder Room58.6 in52.2 in
Row 1 Hip Room54.6 in54.6 in
Row 1 Legroom42.6 in42.5 in
Row 2 Headroom37.9 in0.0 in
Row 2 Shoulder Room57.4 in0.0 in
Row 2 Hip Room55.6 in0.0 in
Row 2 Legroom38.3 in0.0 in
Cargo Volume,
Minimum		13.8 ft36.5 ft3
Cargo Volume,
Maximum		13.89.8 ft3

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See a complete comparison of Cadillac STS vs. Mercedes-Benz SLK specs.

Option Package Details
Mercedes-Benz SLK SLK55 AMG

Lighting Package
FeatureValueRequested?
Xenon HID headlights500Yes
Headlight washers50Yes
Cornering lights50No
Total Requested55092%
Total Not Requested508%
Multimedia Package
FeatureValueRequested?
Navigation system600Yes
Surround sound250Yes
DVD-compatible player0Yes
Voice control for nav and audio100Yes
Harman/Kardon, 380W, 11 speakers (with subwoofer)350No
Media drive, large15No
SD Card slot25No
Total Requested95071%
Total Not Requested39029%

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