Audi RS 6 Avant vs. Audi S6
iSeeCars' unbiased and data-driven comparison of the Audi RS 6 Avant and Audi S6 contrasts the two cars across a broad spectrum of vehicle specifications to determine which car is better. In addition to comparing pricing and specs, iSeeCars uses all the ratings, rankings, and insights from its comprehensive analyses of each vehicle model, including calculations of reliability, safety, depreciation, value retention, and the vehicle's projected lifetime recalls (based on analyzing over 25 billion data points). This in-depth evaluation is used to identify which vehicle represents a better overall choice for shoppers who are considering both the Audi RS 6 Avant and the Audi S6.
When comparing the Audi RS 6 Avant's and the Audi S6's specifications and ratings, the Audi RS 6 Avant has the advantage in the areas of resale value, interior volume and base engine power. The Audi S6 has the advantage in the areas of new vehicle base pricing, typical lower range of pricing for one- to five-year-old used cars, and fuel efficiency. Based on this comparison of the Audi RS 6 Avant's and the Audi S6's specifications and ratings, the two cars are fairly comparable.
Pricing: A used 2025 Audi RS 6 Avant ranges from $125,144 to $227,178 while a used 2025 Audi S6 is priced between $72,992 to $84,694. For a new model, the Audi RS 6 Avant's price is between $138,516 and $201,717, with the Audi S6 priced between $81,378 and $99,959.
Resale/Retained Value: Looking at the 5-year depreciation rate for both models, the Audi RS 6 Avant loses 50.4 percent of its value and the Audi S6 loses 57.7 percent of its value. This means the Audi RS 6 Avant retains 7.3 percentage points more of its value and has the advantage of higher resale value versus the Audi S6.
Engine Power and Fuel Efficiency Comparison: For engine performance, the Audi RS 6 Avant’s base engine makes 621 horsepower, and the Audi S6 base engine makes 444 horsepower. The RS 6 Avant is rated to deliver an average of 17 miles per gallon, with a highway range of 405 miles. The S6 is rated to deliver an average of 22 miles per gallon, with a highway range of 521 miles. This gives the Audi S6 the fuel efficiency and maximum range advantage over the Audi RS 6 Avant. Both models use premium unleaded.
Passenger Space Comparison: While both models are midsize cars, the Audi RS 6 Avant has the advantage of offering more interior volume, reflected in more front head room, rear head room, and cargo space. The Audi RS 6 Avant and Audi S6 are comparable in regards to front shoulder room, front leg room, rear shoulder room and rear leg room.
New Car Pricing
Asking Price:
138516 - 201717
Starting MSRP:
200195
Category Avg Starting MSRP:
(Luxury Midsize Cars)
79467
Category Starting MSRP Range:
(Luxury Midsize Cars)
42140 - 200195
New Car Pricing
Asking Price:
81378 - 99959
Starting MSRP:
75900
Category Avg Starting MSRP:
(Luxury Midsize Cars)
79467
Category Starting MSRP Range:
(Luxury Midsize Cars)
42140 - 200195
Used Car Pricing
Avg Used Car Price:
144992
Price Range:
125144 - 227178
Category Avg Price:
(Luxury Midsize Cars)
80683
Category Avg Price Range:
(Luxury Midsize Cars)
43661 - 144992
# Used Cars for Sale Nationally:
Avg Mileage of Used Cars for Sale:
# Good or Great Deals:
Used Car Pricing
Avg Used Car Price:
79388
Price Range:
72992 - 84694
Category Avg Price:
(Luxury Midsize Cars)
80683
Category Avg Price Range:
(Luxury Midsize Cars)
43661 - 144992
# Used Cars for Sale Nationally:
Avg Mileage of Used Cars for Sale:
# Good or Great Deals:
5-year Depreciation
Depreciation $:
101215
Depreciation %:
0.50558139
Resale Value $:
98980
Residual Value %:
0.49441861
Typical Category Depreciation %:
(Luxury Midsize Cars)
0.49394848
Category Depreciation Range:
(Luxury Midsize Cars)
0.39819597 - 0.61156182
5-year Depreciation
Depreciation $:
43983
Depreciation %:
0.57948844
Resale Value $:
31917
Residual Value %:
0.42051156
Typical Category Depreciation %:
(Luxury Midsize Cars)
0.49394848
Category Depreciation Range:
(Luxury Midsize Cars)
0.39819597 - 0.61156182
Audi RS 6 Avant Scores & Rankings
Overall Score:
Not available
Reliability:
Not available
Retained Value:
7.8 / 10
Safety:
Not available
Audi S6 Scores & Rankings
Overall Score:
Not available
Reliability:
Not available
Retained Value:
7.3 / 10
Safety:
Not available
iSeeCars Reliability Insights for Audi RS 6 Avant
Avg Life Expectancy (years):
Typical Category Life Expectancy:
(Luxury Midsize Cars)
13.2
Category Life Expectancy Range:
(Luxury Midsize Cars)
9.4 - 22.1
Chance of Reaching 200k Miles for a New Car:
iSeeCars Reliability Insights for Audi S6
Avg Life Expectancy (years):
Typical Category Life Expectancy:
(Luxury Midsize Cars)
13.2
Category Life Expectancy Range:
(Luxury Midsize Cars)
9.4 - 22.1
Chance of Reaching 200k Miles for a New Car:
Expected 30-year Lifetime Recalls
Expected Lifetime Recalls:
2.053958662752374
Typical Category Recalls:
(Luxury Midsize Cars)
3.0
Category Range for Recalls:
(Luxury Midsize Cars)
1.5 - 35.8
Expected 30-year Lifetime Recalls
Expected Lifetime Recalls:
2.052602770352568
Typical Category Recalls:
(Luxury Midsize Cars)
3.0
Category Range for Recalls:
(Luxury Midsize Cars)
1.5 - 35.8
Audi RS 6 Avant Rankings
Ranking
1 out of / 10Ranking
2 out of / 10Ranking
3 out of / 10Ranking
4 out of / 10Ranking
5 out of / 10Ranking
7 out of / 7Audi S6 Rankings
Ranking
8 out of / 20Ranking
8 out of / 20Ranking
11 out of / 20Ranking
11 out of / 16Ranking
12 out of / 20Ranking
13 out of / 20Ranking
15 out of / 20Available Body Styles
Wagon
Available Body Styles
Sedan
Available Drivetrain Options
Gasoline
Available Drivetrain Options
Gasoline
Audi RS 6 Avant Trim Levels
4.0T quattro Avant GT
Audi S6 Trim Levels
2.9T quattro Premium, 2.9T quattro Premium Plus, 2.9T quattro Prestige
Warranty Information
Warranty, Bumper-to-Bumper:
4 years / 50000 miles
Warranty, Powertrain:
4 years / 50000 miles
Warranty, Roadside Assistance:
4 years
Warranty Information
Warranty, Bumper-to-Bumper:
4 years / 50000 miles
Warranty, Powertrain:
4 years / 50000 miles
Warranty, Roadside Assistance:
4 years
Safety Ratings
NHTSA Safety Rating (last 5 year average):
Not yet available
2026 NHTSA Overall Rating:
Not yet available
2026 NHTSA Front Crash Overall Rating:
Not yet available
2026 NHTSA Side Crash Overall Rating:
Not yet available
2026 NHTSA Rollover Rating:
Not yet available
IIHS Safety Rating:
Not yet available
Safety Ratings
NHTSA Safety Rating (last 5 year average):
Not yet available
2026 NHTSA Overall Rating:
5 out of 5 Stars
2026 NHTSA Front Crash Overall Rating:
Not yet available
2026 NHTSA Side Crash Overall Rating:
Not yet available
2026 NHTSA Rollover Rating:
5 out of 5 Stars
IIHS Safety Rating:
Not yet available
Base Drivetrain Specs
Horsepower:
621 hp @ 6000 rpm
Torque:
627 foot-lbs @ 2050 rpm
Power-to-Weight Ratio (higher is better):
0.125 hp per pound
Base Drivetrain Specs
Horsepower:
444 hp @ 5900 rpm
Torque:
442 foot-lbs @ 2700 rpm
Power-to-Weight Ratio (higher is better):
0.098 hp per pound
Engine Specifications
Engine Size:
4 liters
Engine Configuration:
V
Number of Cylinders:
8
Transmission:
Automatic
Standard/Optional Drivetrain Type:
AWD
EPA Fuel Economy
(City/Highway/Combined MPG):
14 / 21 / 17
Range (city/hwy):
270 / 405 miles
Recommended Fuel Type:
Premium Unleaded
Engine Specifications
Engine Size:
2.9 liters
Engine Configuration:
V
Number of Cylinders:
6
Transmission:
Automatic
Standard/Optional Drivetrain Type:
AWD
EPA Fuel Economy
(City/Highway/Combined MPG):
19 / 27 / 22
Range (city/hwy):
367 / 521 miles
Recommended Fuel Type:
Premium Unleaded
Standard/Optional Features
Air Suspension:
Standard
Android Auto:
Standard
Apple CarPlay:
Standard
Bench Seats:
Standard
Bluetooth:
Standard
Cooled/Ventilated Seats:
Standard
Heated Seats
Standard
Heated Steering Wheel:
Standard
Internet Radio:
Standard
Keyless Entry:
Standard
Keyless Ignition:
Standard
Leather Upholstery:
Standard
Navigation System:
Standard
Paddle Shifters:
Standard
Parking Sensors:
Standard
Power Lift Gate:
Standard
Power outlet:
Standard
Roadside assistance:
Standard
Satellite radio:
Standard
Sunroof/Moonroof:
Standard
Voice Recognition:
Standard
Wifi:
Standard
Wireless Smartphone Charging:
Standard
Adaptive Cruise Control:
N/A
Alloy wheels:
N/A
Automatic Parking:
N/A
Captain's seat:
N/A
Front Bench Seats:
N/A
Massage Seats:
N/A
Panoramic Sunroof/Moonroof
N/A
Quad Seats:
N/A
Roof Rack:
N/A
Trailer Hitch:
N/A
Standard/Optional Features
Air Suspension:
Standard
Android Auto:
Standard
Apple CarPlay:
Standard
Bench Seats:
Standard
Bluetooth:
Standard
Cooled/Ventilated Seats:
Available
Heated Seats
Standard
Heated Steering Wheel:
Standard
Internet Radio:
Standard
Keyless Entry:
Standard
Keyless Ignition:
Standard
Leather Upholstery:
Standard
Navigation System:
Standard
Paddle Shifters:
Standard
Parking Sensors:
Standard
Power Lift Gate:
Standard
Power outlet:
Standard
Roadside assistance:
Standard
Satellite radio:
Standard
Sunroof/Moonroof:
Standard
Voice Recognition:
Standard
Wifi:
Standard
Wireless Smartphone Charging:
Available
Adaptive Cruise Control:
Available
Alloy wheels:
Standard
Automatic Parking:
Available
Captain's seat:
N/A
Front Bench Seats:
N/A
Massage Seats:
Available
Panoramic Sunroof/Moonroof
N/A
Quad Seats:
N/A
Roof Rack:
N/A
Trailer Hitch:
N/A
Safety Features
360-Degree Camera:
Standard
Driver Attention Monitoring:
Standard
Forward Collision Warning:
Standard
Lane Departure Warning:
Standard
Lane Keeping Assist:
Standard
Pedestrian Detection:
Standard
Backup camera:
N/A
Blind Spot Monitoring:
N/A
Rear Cross-Traffic Alert:
N/A
Rear Seat Reminder:
N/A
Safety Features
360-Degree Camera:
Available
Driver Attention Monitoring:
Standard
Forward Collision Warning:
Standard
Lane Departure Warning:
Standard
Lane Keeping Assist:
Standard
Pedestrian Detection:
Standard
Backup camera:
Standard
Blind Spot Monitoring:
Available
Rear Cross-Traffic Alert:
Available
Rear Seat Reminder:
N/A
Interior Dimensions
Front Head Room:
38.3 inches
Front Leg Room:
41.3 inches
Front Shoulder Room:
57.8 inches
Rear Head Room:
39.5 inches
Rear Leg Room:
37.4 inches
Rear Shoulder Room:
56.5 inches
Cargo Space:
30 cubic feet
Cargo Space, 2nd-row seat folded down:
Not yet available
Cargo Space, 3rd-row seat folded down:
Not yet available
Overall Interior Volume:
131 cubic feet
Interior Dimensions
Front Head Room:
38 inches
Front Leg Room:
41.3 inches
Front Shoulder Room:
57.8 inches
Rear Head Room:
38.1 inches
Rear Leg Room:
37.4 inches
Rear Shoulder Room:
56.5 inches
Cargo Space:
13.7 cubic feet
Cargo Space, 2nd-row seat folded down:
Not yet available
Cargo Space, 3rd-row seat folded down:
Not yet available
Overall Interior Volume:
98.0 cubic feet
Exterior Dimensions
Curb Weight:
4965 lbs
Width:
83.5 inches
Height:
58.6 inches
Length:
196.7 inches
Wheelbase:
115.3 inches
Ground Clearance:
4.1 inches
Exterior Dimensions
Curb Weight:
4519 lbs
Width:
83.1 inches
Height:
56.9 inches
Length:
195 inches
Wheelbase:
115.3 inches
Ground Clearance:
Not yet available
Standard Wheel/Tire Information
Wheel Size:
22.0 x 10.5 inches
Wheel Type:
carbon fiber
Tire Size:
285/30R22
Standard Wheel/Tire Information
Wheel Size:
21.0 x 8.5 inches
Wheel Type:
aluminum alloy
Tire Size:
255/35R21
Exterior Colors
Black
Mythos Black Metallic
Gray
Nardo Gray/Black
White
Arkona White/Black
Blue
Not available
Red
Not available
Silver
Not available
Exterior Colors
Black
Brilliant Black / Mythos Black Metallic
Gray
Chronos Gray Metallic / Daytona Gray Pearl Effect
White
Glacier White Metallic
Blue
Ascari Blue Metallic / Firmament Blue Metallic
Red
Grenadine Red Metallic
Silver
Florett Silver Metallic
Interior Colors
Black
Black w/ Express Red Stitching
Gray
Not available
Red
Not available
Interior Colors
Black
Black w/ Rock Gray Stitching
Gray
Rotor Gray w/ Anthracite Stitching
Red
Arras Red w/ Agate Gray Stitching
