Audi A6 / S6 Audi A6 / S6 2016 Mercedes-Benz SLK Mercedes-Benz SLK 2009
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Audi A6 / S6 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 A6 / S6 vs. Mercedes-Benz SLK Invoice Comparison

Lowest Total Price: $72,400

Audi A6 / S6 S6 4.0 TFSI   
Difference: $635

Lowest Total Invoice: $67,399

Audi A6 / S6 S6 4.0 TFSI   
Difference: $655

Calculate Payments

  Down Payment Interest Rate Term
Model Year20162009
ModelA6 / S6SLK
TrimS6 4.0 TFSISLK55 AMG
Body4dr Sedan2dr Hardtop conv.
Base Price $70,900 $65,700
Base Invoice $65,938 $61,101
Metallic paint (extra cost) 575 720
Lighting Package   1,030
Multimedia Package   2,980
Automatic climate control, front   730
Metallic paint (extra cost) 536 670
Lighting Package   958
Multimedia Package   2,771
Automatic climate control, front   679
Options (change) 575 5,460
Options (change) 536 5,078
Destination 925 875
Gas Tax 0 1,000
Total Price $72,400 $73,035
Total Invoice $67,399 $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

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Request free, no-obligation Audi A6 / S6 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 A6 / S6 vs. Mercedes-Benz SLK

Lowest Adjusted Price and Invoice: Audi A6 / S6 S6 4.0 TFSI
TrueDelta Adjusted Price Difference: $1,615
TrueDelta Adjusted Invoice Difference: $1,567
Model Year20162009
ModelA6 / S6SLK
TrimS6 4.0 TFSISLK55 AMG
Body4dr Sedan2dr Hardtop conv.
Engine450hp V8355hp V8
TransmissionS7T7
DrivetrainAWDRWD
EPA Fuel Economy (city/highway)18/27 MPG14/22 MPG
Audio (watts, speakers)?, 10380, 11
Tire (rear if not all the same)255/40-19225/40-18
Total Price$72,400$73,035
Adjustments for Features-9800
Feature-Adjusted Total Price$71,420$73,035
Total Invoice$67,399$68,054
Adjustments for Features-9120
Feature-Adjusted Total Invoice$66,487$68,054

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Features Comparison: Audi A6 / S6 vs. Mercedes-Benz SLK

Model Year20162009
ModelA6 / S6SLK
TrimS6 4.0 TFSISLK55 AMG
Body4dr Sedan2dr Hardtop conv.
Transmission and Drivetrain 
7-speed automated manual$1200 
7-speed manually-shiftable automatic $1200
AWD$1700 
RWD $0
Accessories 
Power rear side windows$200 
Proximity key$250 
Remote window/roof operation $15
Wind blocker, small $100
Brakes, Airbags, and Other Safety 
Blind spot warning system$200 
Collision preparation system, rear$100 
Obstacle detection, front$150 
Obstacle detection, rear$250 
Rearview camera$200 
Rollover sensor$50 
Secondary collision brake assist$25 
Side curtain airbags$350 
Cargo Management 
Cargo net$40 
Rear seat pass-through$100 
Climate Control 
Automatic air recirculation$100 
Rear air vents with automatic controls$250 
Rear dual-zone climate control$125 
Engine / Motor 
Automatic start / stop$150 
Dual-mode exhaust, switchable$500 
Regenerative braking$0 
Exterior 
Body kit $0
Laminated front side windows$200 
Power retractable hardtop $6750
Rear spoiler $200
Sunroof$900 
Infotainment 
4G LTE connectivity$0 
Bluetooth audio streaming$25 
CD changer, in-dash $325
CD player$125 
Handwriting recognition$200 
HD radio$50 
In-vehicle Internet$150 
Siri Eyes Free support$0 
Surround sound $250
Telematics service, such as OnStar $200
Traffic + travel information$25 
Wi-Fi hotspot$50 
Instruments, Lights, and Mirrors 
Analog clock $25
Auto-dimming passenger-side mirror$75 
Compass$0 
Cornering lights $50
Fog lights $125
Headlight washers $50
Illuminated visor mirror, driver$50 
Illuminated visor mirror, passenger$50 
Power-folding mirrors$50 
Visor mirror, driver $10
Visor mirror, passenger $10
Seats and Interior Trim 
Aluminum trim $100
Center armrest(s), second row$50 
Folding second row seats$300 
Memory system, passenger seat $150
No leather in second row $-300
Synthetic suede inserts in leather seating surfaces $0
Wood trim$300 
Suspension, Wheels, and Tires 
Adaptive dampers - electrical$500 
Air suspension, auto-leveling and height adjustable$1000 
Electronic systems calibration selector$200 
Total Value of Features$10,240$9,260
Value of Feature Adjustments$980$0
Value of Feature Adjustments-9120

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See a complete comparison of Audi A6 / S6 vs. Mercedes-Benz SLK features.

Specifications Comparison: Audi A6 / S6 vs. Mercedes-Benz SLK

Model Year20162009
ModelA6 / S6SLK
Body4dr Sedan2dr Hardtop conv.
Wheelbase114.6 in95.7 in
Length194.2 in160.7 in
Width73.8 in70.4 in
Height57.8 in51.0 in
Curb Weight4,486 lb.3,420 lb.
Fuel Capacity19.8 gal.18.5 gal.
Row 1 Headroom37.2 in37.9 in
Row 1 Shoulder Room57.5 in52.2 in
Row 1 Hip Room0.0 in54.6 in
Row 1 Legroom41.3 in42.5 in
Row 2 Headroom37.8 in0.0 in
Row 2 Shoulder Room56.3 in0.0 in
Row 2 Legroom37.4 in0.0 in
Cargo Volume,
Minimum		14.1 ft36.5 ft3
Cargo Volume,
Maximum		14.19.8 ft3

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See a complete comparison of Audi A6 / S6 vs. Mercedes-Benz SLK specs.

Option Package Details
Mercedes-Benz SLK SLK55 AMG

Lighting Package
FeatureValueRequested?
Xenon HID headlights500Yes
Headlight washers50No
Cornering lights50No
Total Requested50083%
Total Not Requested10017%
Multimedia Package
FeatureValueRequested?
Navigation system600Yes
Surround sound250No
DVD-compatible player0Yes
Voice control for nav and audio100Yes
Harman/Kardon, 380W, 11 speakers (with subwoofer)350No
Media drive, large15Yes
SD Card slot25Yes
Total Requested74055%
Total Not Requested60045%

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