Cadillac STS Cadillac STS 2009 Mercedes-Benz SLK Mercedes-Benz SLK 2012

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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: $74,715

Mercedes-Benz SLK SLK55 AMG   
Difference: $8,320

Lowest Total Invoice: $69,548

Mercedes-Benz SLK SLK55 AMG   
Difference: $6,775

Calculate Payments

  Down Payment Interest Rate Term
Model Year20092012
ModelSTSSLK
TrimSTS-VSLK55 AMG
Body4dr Sedan2dr Hardtop conv.
Base Price $80,160 $67,500
Base Invoice $73,448 $62,775
Lighting Package   1,090
Multimedia Package   2,150
Automatic climate control, front   760
Metallic paint (extra cost)   720
Proximity key   650
Obstacle detection, rear   970
Lighting Package   1,014
Multimedia Package   2,000
Automatic climate control, front   707
Metallic paint (extra cost)   670
Proximity key   605
Obstacle detection, rear   902
Options (change) 0 6,340
Options (change) 0 5,898
Destination 775 875
Gas Tax 2,100 0
Total Price $83,035 $74,715
Total Invoice $76,323 $69,548

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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

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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: $13,655
TrueDelta Adjusted Invoice Difference: $11,741
Model Year20092012
ModelSTSSLK
TrimSTS-VSLK55 AMG
Body4dr Sedan2dr Hardtop conv.
Engine469hp V8415hp V8
TransmissionT6T7
DrivetrainRWDRWD
EPA Fuel Economy (city/highway)13/19 MPG19/28 MPG
Audio (watts, speakers)300, 15500, 11
Tire (rear if not all the same)255/45-18235/40-18
Total Price$83,035$74,715
Adjustments for Features0-5,335
Feature-Adjusted Total Price$83,035$69,380
Total Invoice$76,323$69,548
Adjustments for Features0-4,966
Feature-Adjusted Total Invoice$76,323$64,582

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Features Comparison: Cadillac STS vs. Mercedes-Benz SLK

Model Year20092012
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 
Parking guidance system - passive $250
Power rear side windows$200 
Remote app $25
Remote start$150 
Remote window/roof operation $15
Brakes, Airbags, and Other Safety 
Active or whiplash-reducing head restraints, front seats $0
Blind spot warning system$200 
Driver drowsiness monitor $150
Knee airbag, driver $75
Knee airbag, passenger $75
Lane departure warning$200 
Obstacle detection, front $150
Roll bar $200
Temporary spare tire $150
Tires, run-flat$150 
Torque vectoring, brake-based $100
Cargo Management 
Cargo net$40 
Rear seat pass-through$100 
Climate Control 
Automatic air recirculation$100 
Rear air vents with manual controls$150 
Residual heat $50
Drivetrain 
Limited-slip rear differential$300 
Engine / Motor 
Automatic start / stop $150
Dual-mode exhaust, switchable $500
Exterior 
Body kit $0
Laminated front side windows$200 
Power retractable hardtop $6750
Infotainment 
Aux input $50
Bluetooth audio streaming $25
HD radio $50
Media drive $15
MP3-compatible player $50
Rear seat audio controls$25 
SD Card slot $25
Telematics service, such as OnStar $200
Telematics service, such as OnStar, with navigation$225 
Traffic + travel information $25
USB port $25
Instruments, Lights, and Mirrors 
Analog clock $25
Auto-dimming headlights$200 
Compass $0
Fog light, rear $100
Fog lights$125 
Head-up display (HUD)$350 
Illuminated visor mirror, driver$50 
Illuminated visor mirror, passenger$50 
Interior ambient lighting $150
Mirror tilt-down in reverse $25
Power-folding mirrors $50
Steering-linked headlights $150
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
Metal pedals $75
Neck-level heating, front seats $150
No leather in second row $-300
Upholstered instrument panel, leather$1000 
Wood trim$300 
Suspension, Wheels, and Tires 
Auto-leveling rear shocks$200 
Performance steering system (optional)$0 
Transmission 
Steering-wheel-mounted transmission controls $100
Total Value of Features$5,765$11,100
Value of Feature Adjustments$0$5,335
Value of Feature Adjustments0-4,966

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Specifications Comparison: Cadillac STS vs. Mercedes-Benz SLK

Model Year20092012
ModelSTSSLK
Body4dr Sedan2dr Hardtop conv.
Wheelbase116.4 in95.7 in
Length196.7 in162.8 in
Width72.6 in71.5 in
Height57.6 in51.2 in
Curb Weight4,233 lb.3,583 lb.
Fuel Capacity17.0 gal.15.9 gal.
Row 1 Headroom38.7 in38.0 in
Row 1 Shoulder Room58.6 in52.2 in
Row 1 Hip Room54.6 in0.0 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 ft36.4 ft3
Cargo Volume,
Maximum
13.810.1 ft3

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Option Package Details
Mercedes-Benz SLK SLK55 AMG

Automatic climate control, front
FeatureValueRequested?
Automatic climate control, front200Yes
Dual-zone climate control125Yes
Total Requested325100%
Total Not Requested00%
Obstacle detection, rear
FeatureValueRequested?
Obstacle detection, rear250Yes
Obstacle detection, front150No
Parking guidance system - passive250No
Total Requested25038%
Total Not Requested40062%
Lighting Package
FeatureValueRequested?
Steering-linked headlights150No
Xenon HID headlights500Yes
Headlight washers50Yes
Total Requested55079%
Total Not Requested15021%
Multimedia Package
FeatureValueRequested?
Navigation system600Yes
CD changer, in-dash200Yes
DVD-compatible player0Yes
Voice control for nav and audio100Yes
Media drive, large15No
Traffic + travel information25No
SD Card slot25No
Total Requested90093%
Total Not Requested657%

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