Audi A6 / S6 Audi A6 / S6 2008 Mercedes-Benz SLK Mercedes-Benz SLK 2014

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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: $78,465

Audi A6 / S6 S6   
Difference: $275

Lowest Total Invoice: $73,073

Audi A6 / S6 S6   
Difference: $222

Calculate Payments

  Down Payment Interest Rate Term
Model Year20082014
ModelA6 / S6SLK
TrimS6SLK55 AMG
Body4dr Sedan2dr Hardtop conv.
Base Price $72,350 $68,925
Base Invoice $67,285 $64,100
Technology Package 3,350  
iPod integration 290  
Carbon fiber trim 400 2,250
Multimedia Package   2,150
Lighting Package   1,390
Automatic climate control, front   760
Metallic paint (extra cost)   720
Proximity key   650
Obstacle detection, rear   970
Technology Package 3,115  
iPod integration 225  
Carbon fiber trim 373 2,093
Multimedia Package   2,000
Lighting Package   1,293
Automatic climate control, front   707
Metallic paint (extra cost)   670
Proximity key   605
Obstacle detection, rear   902
Options (change) 4,040 8,890
Options (change) 3,713 8,270
Destination 775 925
Gas Tax 1,300 0
Total Price $78,465 $78,740
Total Invoice $73,073 $73,295

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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: $5,120
TrueDelta Adjusted Invoice Difference: $4,800
Model Year20082014
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)330, 13500, 11
Tire (rear if not all the same)265/35-19235/40-18
Total Price$78,465$78,740
Adjustments for Features0-5,395
Feature-Adjusted Total Price$78,465$73,345
Total Invoice$73,073$73,295
Adjustments for Features0-5,022
Feature-Adjusted Total Invoice$73,073$68,273

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

Model Year20082014
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 
Parking guidance system - passive $250
Power rear side windows$200 
Remote app $25
Remote window/roof operation $15
Brakes, Airbags, and Other Safety 
Driver drowsiness monitor $150
Full-size spare tire$225 
Knee airbag, driver $75
Knee airbag, passenger $75
Obstacle detection, front $150
Rearview camera$200 
Roll bar $200
Temporary spare tire $150
Torque vectoring, brake-based $100
Cargo Management 
Cargo mat$40 
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 
App support $0
Aux input $50
Bluetooth audio streaming $25
CD changer, in-dash $325
CD changer, remote$200 
DVD-compatible player $0
HD radio $50
In-vehicle Internet $150
iPod integration$100 
Media drive $15
SD Card slot $25
SMS text-to-speech reader $25
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
Auto-dimming passenger-side mirror$75 
Fog lights$125 
Illuminated visor mirror, driver$50 
Illuminated visor mirror, passenger$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
Synthetic suede inserts in leather seating surfaces $0
Total Value of Features$6,155$11,550
Value of Feature Adjustments$0$5,395
Value of Feature Adjustments0-5,022

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

Model Year20082014
ModelA6 / S6SLK
Body4dr Sedan2dr Hardtop conv.
Wheelbase111.9 in95.7 in
Length193.5 in162.8 in
Width73.1 in71.5 in
Height57.5 in51.2 in
Curb Weight4,486 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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Option Package Details
Audi A6 / S6 S6

Technology Package
FeatureValueRequested?
Navigation system600Yes
Obstacle detection, rear250Yes
Rearview camera200No
Proximity key250Yes
Voice control for nav and audio100Yes
Total Requested120086%
Total Not Requested20014%

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%
Multimedia Package
FeatureValueRequested?
CD changer, in-dash200Yes
DVD-compatible player0No
Media drive, large15No
Traffic + travel information25No
SD Card slot25No
In-vehicle Internet150No
App support0No
Navigation system600Yes
Voice control for nav and audio100Yes
Total Requested90081%
Total Not Requested21519%
Lighting Package
FeatureValueRequested?
Steering-linked headlights150Yes
Xenon HID headlights500Yes
Headlight washers50Yes
Auto-dimming headlights200No
Total Requested70078%
Total Not Requested20022%

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