Audi A6 / S6 / RS6 Audi A6 / S6 / RS6 2018 Mercedes-Benz SL Mercedes-Benz SL 2009
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Audi A6 / S6 / RS6 vs. Mercedes-Benz SL 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 / RS6 vs. Mercedes-Benz SL Invoice Comparison

Lowest Total Price: $78,300

Audi A6 / S6 / RS6 S6 4.0 TFSI   
Difference: $62,015

Lowest Total Invoice: $72,891

Audi A6 / S6 / RS6 S6 4.0 TFSI   
Difference: $57,845

Calculate Payments

  Down Payment Interest Rate Term
Model Year2018200920092009
ModelA6 / S6 / RS6SLSLSL
TrimS6 4.0 TFSISL600SL63 AMGSL65 AMG
Body4dr Sedan2dr Hardtop conv.2dr Hardtop conv.2dr Hardtop conv.
Base Price $71,900 $139,100 $135,000 $194,700
Base Invoice $66,868 $129,363 $125,550 $181,071
Comfort Seating Package 1,850      
Metallic paint (extra cost) 575      
Synthetic suede headliner 3,000      
Illuminated door sill trim plates   700 700 700
Obstacle detection, rear     1,140  
Wood trim     0 0
Comfort Seating Package 1,722      
Metallic paint (extra cost) 536      
Synthetic suede headliner 2,790      
Illuminated door sill trim plates   651 651 651
Obstacle detection, rear     1,060  
Wood trim     0 0
Options (change) 5,425 700 1,840 700
Options (change) 5,048 651 1,711 651
Destination 975 875 875 875
Gas Tax 0 2,600 2,600 2,600
Total Price $78,300 $143,275 $140,315 $198,875
Total Invoice $72,891 $133,489 $130,736 $185,197

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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 / RS6 dealer quotes or Mercedes-Benz SL dealer quotes from dealers using our car quote form.

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TrueDelta Value Comparison: Audi A6 / S6 / RS6 vs. Mercedes-Benz SL

Lowest Adjusted Price and Invoice: Audi A6 / S6 / RS6 S6 4.0 TFSI
TrueDelta Adjusted Price Difference: $57,565
TrueDelta Adjusted Invoice Difference: $53,699
Model Year2018200920092009
ModelA6 / S6 / RS6SLSLSL
TrimS6 4.0 TFSISL600SL63 AMGSL65 AMG
Body4dr Sedan2dr Hardtop conv.2dr Hardtop conv.2dr Hardtop conv.
Engine450hp V8510hp V12518hp V8604hp V12
TransmissionS7T5T7T5
DrivetrainAWDRWDRWDRWD
EPA Fuel Economy (city/highway)/ MPG/ MPG/ MPG/ MPG
Audio (watts, speakers)630, 14510, 10510, 10510, 10
Tire (rear if not all the same)255/35-20255/40-18255/35-19255/35-19
Total Price$78,300$143,275$140,315$198,875
Adjustments for Features0-5,400-4,450-5,500
Feature-Adjusted Total Price$78,300$137,875$135,865$193,375
Cost Above Minimum$0$2,010$0$57,510
Total Invoice$72,891$133,489$130,736$185,197
Adjustments for Features0-5,031-4,146-5,122
Feature-Adjusted Total Invoice$72,891$128,458$126,590$180,075
Cost Above Minimum$0$1,868$0$53,485

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Features Comparison: Audi A6 / S6 / RS6 vs. Mercedes-Benz SL

Model Year2018200920092009
ModelA6 / S6 / RS6SLSLSL
TrimS6 4.0 TFSISL600SL63 AMGSL65 AMG
Body4dr Sedan2dr Hardtop conv.2dr Hardtop conv.2dr Hardtop conv.
Transmission and Drivetrain 
7-speed automated manual$1200   
5-speed manually-shiftable automatic $1000 $1000
7-speed manually-shiftable automatic  $1200 
AWD$1700   
RWD $0$0$0
Accessories 
Power rear side windows$200   
Power trunk closer $350 $350
Proximity key$250$250 $250
Remote window/roof operation $15$15$15
Wind blocker, small $100$100$100
Brakes, Airbags, and Other Safety 
Active or whiplash-reducing head restraints, front seats $0$0$0
Auto-raising roll bars / headrests $500$500$500
Blind spot warning system$200   
Collision preparation system, rear$100   
Knee airbag, passenger$75   
Rearview camera$200   
Rollover sensor$50   
Secondary collision brake assist$25   
Side curtain airbags$350   
Cargo Management 
Air-conditioned storage compartment $50$50$50
Cargo net$40   
Rear seat pass-through$100   
Storage compartment under front seat(s) $50$50$50
Climate Control 
Rear air vents with automatic controls$250   
Rear dual-zone climate control$125   
Wiper de-icer $25$25$25
Engine / Motor 
Automatic start / stop$150   
Dual-mode exhaust, switchable$500   
Regenerative braking$0   
Exterior 
Body kit  $0$0
Glass roof panel(s) $300 $300
Laminated front side windows$200   
Power retractable hardtop $6750$6750$6750
Sunroof$900   
Infotainment 
4G LTE connectivity$0   
Android Auto support$100   
Apple CarPlay support$100   
Bluetooth audio streaming$25   
CD changer, in-dash $325$325$325
CD player$125   
Handwriting recognition$200   
HD radio$50   
In-vehicle Internet$150   
iPod integration $100$100$100
Telematics service, such as OnStar $200$200$200
Traffic + travel information$25   
USB port$25   
Wi-Fi hotspot$50   
Instruments, Lights, and Mirrors 
Auto-dimming passenger-side mirror$75   
Compass$0   
Cornering lights $50$50$50
Fog lights $125$125$125
Headlight washers $50$50$50
LED headlights$1000   
Power-folding mirrors$50   
Steering-linked headlights $150$150$150
Xenon HID headlights $500$500$500
Seats and Interior Trim 
Center armrest(s), second row$50   
Cooled or ventilated front seats$300$300 $300
Folding second row seats$300   
Leather-wrapped steering wheel$150   
Neck-level heating, front seats $150 $150
No leather in second row $-300$-300$-300
Power headrest height adjuster, driver seat $50$50$50
Power headrest height adjuster, passenger seat $50$50$50
Power thigh bolsters, driver seat$100   
Power thigh bolsters, passenger seat$100   
Synthetic suede steering wheel  $150$150
Upholstered instrument panel, leather $1000$1000$1000
Wood/leather-wrapped steering wheel $150  
Suspension, Wheels, and Tires 
Adaptive hydraulic struts, auto-leveling and ht. adjustable $4000$4000$4000
Air suspension, auto-leveling and height adjustable$1000   
Electronic systems calibration selector$200   
Sport suspension (upgrade)$0 $0$0
Transmission 
Launch control  $100 
Steering-wheel-mounted transmission controls$100 $100$100
Total Value of Features$10,890$16,290$15,340$16,390
Value of Feature Adjustments$0$5,400$4,450$5,500
Value of Feature Adjustments0-5,031-4,146-5,122

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See a complete comparison of Audi A6 / S6 / RS6 vs. Mercedes-Benz SL features.

Specifications Comparison: Audi A6 / S6 / RS6 vs. Mercedes-Benz SL

Model Year20182009
ModelA6 / S6 / RS6SL
Body4dr Sedan2dr Hardtop conv.
Wheelbase114.6 in100.8 in
Length194.2 in180.4 in
Width73.8 in71.5 in
Height57.8 in51.1 in
Curb Weight3,804 lb.4,221 lb.
Fuel Capacity19.8 gal.21.1 gal.
Row 1 Headroom37.2 in37.7 in
Row 1 Shoulder Room57.5 in54.0 in
Row 1 Hip Room0.0 in53.9 in
Row 1 Legroom41.3 in42.9 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 ft37.2 ft3
Cargo Volume,
Maximum		14.110.2 ft3

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See a complete comparison of Audi A6 / S6 / RS6 vs. Mercedes-Benz SL specs.

Option Package Details
Audi A6 / S6 / RS6 S6 4.0 TFSI

Comfort Seating Package
FeatureValueRequested?
Cooled or ventilated front seats300Yes
Power thigh support length adjuster, driver seat100Yes
Power thigh bolsters, driver seat100No
Power seatback bolsters, driver seat100Yes
Power thigh support length adjuster, passenger seat100Yes
Power thigh bolsters, passenger seat100No
Power seatback bolsters, passenger seat100Yes
Memory system, passenger seat150Yes
Massage, driver seat100Yes
Massage, passenger seat100Yes
Total Requested105084%
Total Not Requested20016%

Option Package Details
Mercedes-Benz SL SL63 AMG

Obstacle detection, rear
FeatureValueRequested?
Obstacle detection, rear250Yes
Obstacle detection, front150Yes
Total Requested400100%
Total Not Requested00%

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