Audi A4 / S4 / RS4 Audi A4 / S4 / RS4 2008 Mercedes-Benz SLK Mercedes-Benz SLK 2010
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Audi A4 / S4 / RS4 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.

Audi A4 / S4 / RS4 vs. Mercedes-Benz SLK Invoice Comparison

Lowest Total Price: $73,895

Mercedes-Benz SLK SLK55 AMG   
Difference: $10,880

Lowest Total Invoice: $68,854

Mercedes-Benz SLK SLK55 AMG   
Difference: $10,189

Calculate Payments

  Down Payment Interest Rate Term
Model Year20082010
ModelA4 / S4 / RS4SLK
TrimRS4 CabrioletSLK55 AMG
Body2dr Convertible2dr Hardtop conv.
Base Price $81,900 $66,650
Base Invoice $76,168 $61,985
Aluminum trim 0  
iPod integration 0  
Lighting Package   1,050
Multimedia Package   2,850
Metallic paint (extra cost)   720
Automatic climate control, front   750
Aluminum trim 0  
iPod integration 0  
Lighting Package   976
Multimedia Package   2,650
Metallic paint (extra cost)   670
Automatic climate control, front   698
Options (change) 0 5,370
Options (change) 0 4,994
Destination 775 875
Gas Tax 2,100 1,000
Total Price $84,775 $73,895
Total Invoice $79,043 $68,854

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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 Audi A4 / S4 / RS4 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: Audi A4 / S4 / RS4 vs. Mercedes-Benz SLK

Lowest Adjusted Price and Invoice: Mercedes-Benz SLK SLK55 AMG
TrueDelta Adjusted Price Difference: $10,755
TrueDelta Adjusted Invoice Difference: $10,072
Model Year20082010
ModelA4 / S4 / RS4SLK
TrimRS4 CabrioletSLK55 AMG
Body2dr Convertible2dr Hardtop conv.
Engine420hp V8355hp V8
TransmissionM6T7
DrivetrainAWDRWD
EPA Fuel Economy (city/highway)13/20 MPG14/22 MPG
Audio (watts, speakers)215, 9?, 9
Tire (rear if not all the same)255/35-19225/40-18
Total Price$84,775$73,895
Adjustments for Features-1250
Feature-Adjusted Total Price$84,650$73,895
Total Invoice$79,043$68,854
Adjustments for Features-1170
Feature-Adjusted Total Invoice$78,926$68,854

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Features Comparison: Audi A4 / S4 / RS4 vs. Mercedes-Benz SLK

Model Year20082010
ModelA4 / S4 / RS4SLK
TrimRS4 CabrioletSLK55 AMG
Body2dr Convertible2dr Hardtop conv.
Transmission and Drivetrain 
6-speed manual$150 
7-speed manually-shiftable automatic $1200
AWD$1700 
RWD $0
Accessories 
Power rear side windows$200 
Remote window/roof operation $15
Tilt/telescoping steering wheel, manual$250 
Tilt/telescoping steering wheel, power $350
Wind blocker$300 
Wind blocker, small $100
Brakes, Airbags, and Other Safety 
Active or whiplash-reducing head restraints, front seats$0 
Auto-raising roll bars / headrests$500 
Full-size spare tire$225 
Obstacle detection, rear$250 
Temporary spare tire $150
Cargo Management 
Rear seat pass-through$100 
Ski sack$50 
Storage compartment under front seat(s)$50 
Climate Control 
Automatic air recirculation$100 
Residual heat $50
Exterior 
Bodyside moldings$75 
Power convertible top$4000 
Power retractable hardtop $6750
Sunroof$900 
Infotainment 
Aux input $50
CD changer, in-dash $325
DVD-compatible player $0
HD radio $50
Media drive $15
SD Card slot $25
Telematics service, such as OnStar $200
Traffic information $25
Voice control for nav and audio $100
Instruments, Lights, and Mirrors 
Analog clock $25
Auto-dimming passenger-side mirror$75 
Compass$0 
Cornering lights $50
Illuminated visor mirror, driver$50 
Illuminated visor mirror, passenger$50 
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 
Center armrest(s), second row$50 
Heated second row seats$200 
Manual height adjuster, driver seat$50 
Manual thigh support length adjuster, driver seat$50 
Memory system, passenger seat $150
Metal pedals $75
No leather in second row $-300
Power fore-aft adjuster, driver seat $100
Power height adjuster, driver seat $100
Power recliner, driver seat $100
Power tilt adjuster, driver seat $100
Synthetic suede inserts in leather seating surfaces $0
Suspension, Wheels, and Tires 
Hydraulically cross-linked dampers$500 
Sport suspension (upgrade) $0
Ultra-sport suspension (upgrade)$0 
Transmission 
Steering-wheel-mounted transmission controls $100
Total Value of Features$10,075$9,950
Value of Feature Adjustments$125$0
Value of Feature Adjustments-1170

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See a complete comparison of Audi A4 / S4 / RS4 vs. Mercedes-Benz SLK features.

Specifications Comparison: Audi A4 / S4 / RS4 vs. Mercedes-Benz SLK

Model Year20082010
ModelA4 / S4 / RS4SLK
Body2dr Convertible2dr Hardtop conv.
Wheelbase104.3 in95.7 in
Length180.0 in160.7 in
Width70.0 in70.4 in
Height54.8 in51.0 in
Curb Weight4,266 lb.3,420 lb.
Fuel Capacity16.6 gal.18.5 gal.
Row 1 Headroom38.0 in37.9 in
Row 1 Shoulder Room53.0 in52.2 in
Row 1 Hip Room0.0 in54.6 in
Row 1 Legroom41.3 in42.5 in
Row 2 Headroom36.3 in0.0 in
Row 2 Shoulder Room45.1 in0.0 in
Row 2 Legroom32.4 in0.0 in
Cargo Volume,
Minimum		8.9 ft36.5 ft3
Cargo Volume,
Maximum		8.99.8 ft3

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See a complete comparison of Audi A4 / S4 / RS4 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
Satellite radio200Yes
DVD-compatible player0No
Voice control for nav and audio100No
Traffic information25No
HD radio50No
Media drive, large15No
SD Card slot25No
Total Requested80079%
Total Not Requested21521%

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