Audi A8 / S8 Audi A8 / S8 2009 Mercedes-Benz SL Mercedes-Benz SL 2008

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Audi A8 / S8 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 A8 / S8 vs. Mercedes-Benz SL Invoice Comparison

Lowest Total Price: $102,805

Mercedes-Benz SL SL550   
Difference: $1,220

Lowest Total Invoice: $95,761

Mercedes-Benz SL SL550   
Difference: $1,187

Calculate Payments

  Down Payment Interest Rate Term
Model Year20092008200820082008
ModelA8 / S8SLSLSLSL
TrimS8SL550SL600SL55 AMGSL65 AMG
Body4dr Sedan2dr Hardtop conv.2dr Hardtop conv.2dr Hardtop conv.2dr Hardtop conv.
Base Price $96,200 $95,300 $133,200 $129,300 $187,200
Base Invoice $89,465 $88,629 $123,876 $120,249 $174,096
Upholstered instrument panel, leather 4,900        
Premium I Package   3,170      
Obstacle detection, rear   1,130 1,130 1,130 1,130
Voice control for nav and audio   510 510 510 510
Power trunk closer   520   520  
Wood trim       0 0
Upholstered instrument panel, leather 4,558        
Premium I Package   2,948      
Obstacle detection, rear   1,051 1,051 1,051 1,051
Voice control for nav and audio   474 474 474 474
Power trunk closer   484   484  
Wood trim       0 0
Options (change) 4,900 5,330 1,640 2,160 1,640
Options (change) 4,558 4,957 1,525 2,009 1,525
Destination 825 875 875 875 875
Gas Tax 2,100 1,300 2,600 2,600 2,600
Total Price $104,025 $102,805 $138,315 $134,935 $192,315
Total Invoice $96,948 $95,761 $128,876 $125,733 $179,096

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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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TrueDelta Value Comparison: Audi A8 / S8 vs. Mercedes-Benz SL

Lowest Adjusted Price and Invoice: Mercedes-Benz SL SL550
TrueDelta Adjusted Price Difference: $6,045
TrueDelta Adjusted Invoice Difference: $5,681
Model Year20092008200820082008
ModelA8 / S8SLSLSLSL
TrimS8SL550SL600SL55 AMGSL65 AMG
Body4dr Sedan2dr Hardtop conv.2dr Hardtop conv.2dr Hardtop conv.2dr Hardtop conv.
Engine450hp V10382hp V8510hp V12510hp V8604hp V12
TransmissionT6T7T5T5T5
DrivetrainAWDRWDRWDRWDRWD
EPA Fuel Economy (city/highway)/ MPG/ MPG/ MPG/ MPG/ MPG
Audio (watts, speakers)200, 12250, 8250, 8250, 8250, 8
Tire (rear if not all the same)265/35-20255/40-18255/40-18255/35-19255/35-19
Total Price$104,025$102,805$138,315$134,935$192,315
Adjustments for Features0-4,825-5,275-4,775-5,375
Feature-Adjusted Total Price$104,025$97,980$133,040$130,160$186,940
Cost Above Minimum$0$0$35,060$32,180$88,960
Total Invoice$96,948$95,761$128,876$125,733$179,096
Adjustments for Features0-4,494-4,915-4,449-5,006
Feature-Adjusted Total Invoice$96,948$91,267$123,961$121,284$174,090
Cost Above Minimum$0$0$32,694$30,017$82,823

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Features Comparison: Audi A8 / S8 vs. Mercedes-Benz SL

Model Year20092008200820082008
ModelA8 / S8SLSLSLSL
TrimS8SL550SL600SL55 AMGSL65 AMG
Body4dr Sedan2dr Hardtop conv.2dr Hardtop conv.2dr Hardtop conv.2dr Hardtop conv.
Transmission and Drivetrain 
6-speed manually-shiftable automatic$1100    
7-speed manually-shiftable automatic $1200   
5-speed manually-shiftable automatic  $1000$1000$1000
AWD$1700    
RWD $0$0$0$0
Accessories 
Power door closers$300    
Power rear side windows$200    
Proximity key$250$250$250 $250
Sunshade, rear, power$225    
Sunshades, second row$125    
Wind blocker, small $100$100$100$100
Brakes, Airbags, and Other Safety 
Auto-raising roll bars / headrests $500$500$500$500
Full-size spare tire$225    
Knee airbag, passenger$75    
Rear side airbags$300    
Rearview camera$200    
Side curtain airbags$350    
Temporary spare tire $150$150$150$150
Cargo Management 
Air-conditioned storage compartment $50$50$50$50
Storage compartment under front seat(s) $50$50$50$50
Climate Control 
Rear air vents$100    
Wiper de-icer $25$25$25$25
Exterior 
Body kit   $0$0
Bodyside moldings$75    
Power retractable hardtop $6750$6750$6750$6750
Sunroof$900    
Infotainment 
CD player $125$125$125$125
iPod integration$100    
MP3-compatible player $50$50$50$50
Telematics service, such as OnStar $200$200$200$200
Instruments, Lights, and Mirrors 
Auto-dimming passenger-side mirror$75    
Cornering lights$50$50$50 $50
Power-folding mirrors$50    
Steering-linked headlights$150    
Seats and Interior Trim 
Center armrest(s), second row$50    
Cooled or ventilated front seats $300$300 $300
Leather-wrapped steering wheel$150$150   
Metal pedals $75$75$75$75
No leather in second row $-300$-300$-300$-300
Power seatback bolsters, driver seat $100$100$100$100
Power seatback bolsters, passenger seat $100$100$100$100
Power upper seatback recliner, driver seat$100    
Power upper seatback recliner, passenger seat$100    
Synthetic suede headliner$650 $650$650$650
Synthetic suede steering wheel   $150$150
Wood/leather-wrapped steering wheel  $150  
Suspension, Wheels, and Tires 
Adaptive dampers - electrical$500    
Adaptive hydraulic struts, auto-leveling and ht. adjustable $4000$4000$4000$4000
Air suspension, auto-leveling and height adjustable$1000    
Sport suspension (upgrade)$0  $0$0
Transmission 
Steering-wheel-mounted transmission controls   $100$100
Total Value of Features$9,100$13,925$14,375$13,875$14,475
Value of Feature Adjustments$0$4,825$5,275$4,775$5,375
Value of Feature Adjustments0-4,494-4,915-4,449-5,006

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Specifications Comparison: Audi A8 / S8 vs. Mercedes-Benz SL

Model Year20092008
ModelA8 / S8SL
Body4dr Sedan2dr Hardtop conv.
Wheelbase115.9 in100.8 in
Length199.3 in178.5 in
Width74.6 in71.5 in
Height56.9 in51.0 in
Curb Weight4,289 lb.4,221 lb.
Fuel Capacity23.8 gal.21.1 gal.
Row 1 Headroom37.3 in37.7 in
Row 1 Shoulder Room59.1 in54.0 in
Row 1 Hip Room0.0 in53.9 in
Row 1 Legroom41.4 in42.9 in
Row 2 Headroom38.0 in0.0 in
Row 2 Shoulder Room57.5 in0.0 in
Row 2 Legroom37.6 in0.0 in
Cargo Volume,
Minimum
14.6 ft37.3 ft3
Cargo Volume,
Maximum
14.610.2 ft3

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Option Package Details
Mercedes-Benz SL SL550

Obstacle detection, rear
FeatureValueRequested?
Obstacle detection, rear250Yes
Obstacle detection, front150Yes
Total Requested400100%
Total Not Requested00%
Premium I Package
FeatureValueRequested?
Cooled or ventilated front seats300No
Cornering lights50Yes
Proximity key250Yes
Power 4-way lumbar adjuster, driver seat50Yes
Power seatback bolsters, driver100No
Power 4-way lumbar adjuster, passenger seat50Yes
Power seatback bolsters, passenger seat100No
Front sport buckets100Yes
Total Requested50050%
Total Not Requested50050%

Option Package Details
Mercedes-Benz SL SL600

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

Option Package Details
Mercedes-Benz SL SL55 AMG

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

Option Package Details
Mercedes-Benz SL SL65 AMG

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

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