Audi A6 / S6 Audi A6 / S6 2009 Mercedes-Benz SLK Mercedes-Benz SLK 2015
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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: $77,005

Mercedes-Benz SLK SLK55 AMG   
Difference: $1,420

Lowest Total Invoice: $71,681

Mercedes-Benz SLK SLK55 AMG   
Difference: $1,405

Calculate Payments

  Down Payment Interest Rate Term
Model Year20092015
ModelA6 / S6SLK
TrimS6SLK55 AMG
Body4dr Sedan2dr Hardtop conv.
Base Price $75,900 $70,900
Base Invoice $70,588 $65,937
Carbon fiber trim 400 2,250
Becker Map Pilot   800
Automatic climate control, front   760
Metallic paint (extra cost)   720
Proximity key   650
Carbon fiber trim 373 2,093
Becker Map Pilot   744
Automatic climate control, front   707
Metallic paint (extra cost)   670
Proximity key   605
Options (change) 400 5,180
Options (change) 373 4,819
Destination 825 925
Gas Tax 1,300 0
Total Price $78,425 $77,005
Total Invoice $73,086 $71,681

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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.

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

Lowest Adjusted Price and Invoice: Mercedes-Benz SLK SLK55 AMG
TrueDelta Adjusted Price Difference: $5,565
TrueDelta Adjusted Invoice Difference: $5,263
Model Year20092015
ModelA6 / S6SLK
TrimS6SLK55 AMG
Body4dr Sedan2dr Hardtop conv.
Engine435hp V10415hp V8
TransmissionT6T7
DrivetrainAWDRWD
EPA Fuel Economy (city/highway)14/19 MPG19/28 MPG
Audio (watts, speakers)255, 9500, 11
Tire (rear if not all the same)265/35-19235/40-18
Total Price$78,425$77,005
Adjustments for Features0-4,145
Feature-Adjusted Total Price$78,425$72,860
Total Invoice$73,086$71,681
Adjustments for Features0-3,858
Feature-Adjusted Total Invoice$73,086$67,823

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

Model Year20092015
ModelA6 / S6SLK
TrimS6SLK55 AMG
Body4dr Sedan2dr Hardtop conv.
Transmission and Drivetrain 
6-speed manually-shiftable automatic$1100 
7-speed manually-shiftable automatic $1200
AWD$1700 
RWD $0
Accessories 
Power rear side windows$200 
Remote app $25
Remote window/roof operation $15
Sunshade, rear, power$225 
Sunshades, second row$125 
Brakes, Airbags, and Other Safety 
Driver drowsiness monitor $150
Full-size spare tire$225 
Knee airbag, driver $75
Knee airbag, passenger $75
Rearview camera$200 
Roll bar $200
Temporary spare tire $150
Torque vectoring, brake-based $100
Cargo Management 
Cargo net$40 
Rear seat pass-through$100 
Ski sack$50 
Storage compartment under front seat(s)$50 
Climate Control 
Automatic air recirculation$100 
Rear air vents$100 
Engine / Motor 
Automatic start / stop $150
Dual-mode exhaust, switchable $500
Exterior 
Body kit $0
Bodyside cladding$350 
Glass roof panel(s) $300
Power retractable hardtop $6750
Rear spoiler $200
Sunroof$900 
Infotainment 
Bluetooth audio streaming $25
CD changer, remote$200 
CD player $125
HD radio $50
iPod integration$100 
SMS text-to-speech reader $25
Telematics service, such as OnStar, with navigation $225
Traffic information $25
USB port $25
Instruments, Lights, and Mirrors 
Analog clock $25
Auto-dimming headlights $200
Auto-dimming passenger-side mirror$75 
Cornering lights$50 
Fog lights$125 
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 
Center armrest(s), second row$50 
Folding second row seats$300 
Manual thigh support length adjuster, driver seat$50 
Memory system, passenger seat $150
Metal pedals $75
Neck-level heating, front seats $150
No leather in second row $-300
Power headrest height adjuster, driver seat$50 
Power headrest height adjuster, passenger seat$50 
Synthetic suede inserts in leather seating surfaces $0
Total Value of Features$6,615$10,760
Value of Feature Adjustments$0$4,145
Value of Feature Adjustments0-3,858

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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 Year20092015
ModelA6 / S6SLK
Body4dr Sedan2dr Hardtop conv.
Wheelbase111.9 in95.7 in
Length193.5 in162.8 in
Width73.0 in71.5 in
Height57.5 in51.2 in
Curb Weight4,519 lb.3,583 lb.
Fuel Capacity21.1 gal.15.9 gal.
Row 1 Headroom38.7 in38.0 in
Row 1 Shoulder Room57.1 in52.2 in
Row 1 Legroom41.3 in42.5 in
Row 2 Headroom37.8 in0.0 in
Row 2 Shoulder Room55.9 in0.0 in
Row 2 Legroom36.9 in0.0 in
Cargo Volume,
Minimum		15.9 ft36.4 ft3
Cargo Volume,
Maximum		15.910.1 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

Automatic climate control, front
FeatureValueRequested?
Automatic climate control, front200Yes
Dual-zone climate control125Yes
Total Requested325100%
Total Not Requested00%
Becker Map Pilot
FeatureValueRequested?
Navigation system600Yes
Voice control for nav and audio100Yes
Traffic information25No
Total Requested70097%
Total Not Requested253%

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