The 2018 Audi S6 gets a 4-liter V8 under the hood that makes 450 hp @ 5800 rpm horsepower and 406 lb.-ft. @ 1400 rpm of torque. This engine is quite fuel-efficient and helps the car deliver a mileage of 16 mpg in the city and 24 mpg on the highway. The combined efficiency of the engine comes out to be 18 mpg as rated by the EPA.

2018 Audi S6 MPG and Range

Trim NameMPG CityMPG HighwayMPG CombinedFuel Tank CapacityRange in Miles
Premium Plus quattro 4dr Sedan AWD (4.0L 8cyl Turbo 7AM)16 mpg24 mpg18 mpg19.8 gal.287.3/439.4 mi.
Prestige quattro 4dr Sedan AWD (4.0L 8cyl Turbo 7AM)16 mpg24 mpg18 mpg19.8 gal.316.8/475.2 mi.
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Used 2018 Audi S6 For Sale

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2017 Audi S6Home Delivery
14
Price Drop, $444
Previous Price: $3388820 Jul 2022

2017 Audi S6 Premium Plus

Premium Plus quattro 4dr Sedan AWD (4.0L 8cyl Turbo 7AM)

$33,444
Est. $454/mo
Excellent Deal
$5,249 Below market
RMV: $38,693
Claxton, GA
2018 Audi S6Home Delivery
18
Price Drop, $1000
Previous Price: $4399610 Jun 2022

2018 Audi S6 Premium Plus

Premium Plus quattro 4dr Sedan AWD (4.0L 8cyl Turbo 7AM)

$42,996
Est. $583/mo
Excellent Deal
$6,484 Below market
RMV: $49,480
Fort Myers, FL
2018 Audi S6
17
Price Drop, $1000
Previous Price: $4399529 Jun 2022

2018 Audi S6 Prestige

Prestige quattro 4dr Sedan AWD (4.0L 8cyl Turbo 7AM)

$42,995
Est. $583/mo
Good Deal
$4,602 Below market
RMV: $47,597
Huntington, NY
2017 Audi S6Home Delivery
15
Price Drop, $1000
Previous Price: $4279501 Jun 2022

2017 Audi S6 Prestige

Prestige quattro 4dr Sedan AWD (4.0L 8cyl Turbo 7AM)

$41,795
Est. $567/mo
Good Deal
$4,313 Below market
RMV: $46,108
Gilbert, AZ
2017 Audi S6Home Delivery
24
Price Drop, $400
Previous Price: $4297705 May 2021

2017 Audi S6 Premium Plus

Premium Plus quattro 4dr Sedan AWD (4.0L 8cyl Turbo 7AM)

$42,577
Est. $578/mo
Good Deal
$3,861 Below market
RMV: $46,438
Cincinnati, OH
2017 Audi S6
12
Price Drop, $500
Previous Price: $3899522 Jul 2022

2017 Audi S6 Prestige

Prestige quattro 4dr Sedan AWD (4.0L 8cyl Turbo 7AM)

$38,495
Est. $522/mo
Good Deal
$3,368 Below market
RMV: $41,863
Louisville, KY
2017 Audi S6
7
Price Drop, $1000
Previous Price: $4690001 Jul 2022

2017 Audi S6 Premium Plus

Premium Plus quattro 4dr Sedan AWD (4.0L 8cyl Turbo 7AM)

$45,900
Est. $623/mo
Good Deal
$3,928 Below market
RMV: $49,828
Honolulu, HI
2017 Audi S6Home Delivery
19
Price Drop, $14
Previous Price: $4763023 Jul 2022

2017 Audi S6 Prestige

Prestige quattro 4dr Sedan AWD (4.0L 8cyl Turbo 7AM)

$47,616
Est. $646/mo
Good Deal
$2,672 Below market
RMV: $50,288
Knoxville, TN
2018 Audi S6Home Delivery
4

2018 Audi S6 Prestige

Prestige quattro 4dr Sedan AWD (4.0L 8cyl Turbo 7AM)

$50,536
Est. $686/mo
Good Deal
$2,752 Below market
RMV: $53,288
Saint Louis, MO
When it comes to fuel economy, the 2018 Audi S6 is the least efficient of the lot. The car offers 16 mpg in the city, 24 mpg on the highway and combined efficiency of 18 mpg. All other rivals offer almost similar mpg figures but the 2018 Audi S6 still goes down with its poorest mileage.

Its low MPG figures also hinder the overall travel range on a full tank which comes out to be 287.3/439.4 - 316.8/475.2 miles. The most efficient car amongst the competition is the 2018 Alfa Romeo Giulia with a mileage of 23.5 mpg in the city and 32 mpg on the highway. It has a total travel range of 351.9/474.3 - 370.0/573.5 miles on a full tank.

2018 Audi S6 vs. Competitor's MPG and Range

Car NameMPG CityMPG HighwayMPG CombinedFuel Tank CapacityRange in Miles
2018 Audi S616 mpg24 mpg18 mpg19.8 gal.287.3/439.4 - 316.8/475.2 mi.
2018 Alfa Romeo Giulia23 - 24 mpg31 - 33 mpg26 - 27 mpg15.3 gal.351.9/474.3 - 370.0/573.5 mi.
2018 Genesis G9015 - 17 mpg23 - 24 mpg18 - 20 mpg21.9 gal.319.0/464.0 - 372.3/525.6 mi.
2018 Mercedes-Benz C-Class23 - 24 mpg32 - 33 mpg26 - 27 mpg17.4 gal.400.20 / 556.80 - 417.60 / 574.20 mi.
2018 Audi A616 - 25 mpg24 - 34 mpg18 - 28 mpg19.8 gal.354.2/515.2 - 495.0/673.2 mi.
2018 Audi S716 - 17 mpg24 mpg18 - 21 mpg19.8 gal.316.8/475.2 - 336.6/534.6 mi.
2018 Cadillac CT618 - 22 mpg26 - 30 mpg21 - 25 mpg19.5 gal.266.0/399.0 - 429.0/585.0 mi.
2018 Audi A319 - 26 mpg28 - 35 mpg22 - 29 mpg13.2 - 14.5 gal.343.20 / 462.00 - 377.0/507.5 mi.
2018 Cadillac CTS19 - 22 mpg27 - 30 mpg22 - 25 mpg19 gal.324.0/486.0 - 418.0/570.0 mi.
2018 Jaguar XE20 - 25 mpg29 - 34 mpg24 - 29 mpg16.6 gal.332.00 / 481.40 - 415.00 / 564.40 mi.
2018 BMW 5 Series20 - 24 mpg29 - 34 mpg23 - 27 mpg18 gal.360.0/522.0 - 414.0/594.0 mi.
2018 Jaguar XF20 - 25 mpg28 - 34 mpg23 - 28 mpg19.5 gal.-

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2017 Audi S6 MPG and Range

Trim NameMPG CityMPG HighwayMPG CombinedFuel Tank CapacityRange in Miles
Premium Plus quattro 4dr Sedan AWD (4.0L 8cyl Turbo 7AM)18 mpg27 mpg21 mpg19.8 gal.356.40 / 534.60 mi.
Prestige quattro 4dr Sedan AWD (4.0L 8cyl Turbo 7AM)18 mpg27 mpg21 mpg19.8 gal.356.40 / 534.60 mi.

2017 Audi S6 vs. Competitor's MPG and Range

Car NameMPG CityMPG HighwayMPG CombinedFuel Tank CapacityRange in Miles
2017 Audi S815 mpg24 mpg18 mpg21.7 gal.325.50 / 520.80 mi.
2017 Mercedes-Benz AMG C 6318 mpg25 mpg21 mpg17.4 gal.313.20 / 435.00 mi.
2017 Genesis G9015 - 17 mpg23 - 24 mpg18 - 20 mpg21.9 gal.328.50 / 503.70 - 372.30 / 525.60 mi.
2017 Mercedes-Benz C-Class24 mpg31 - 34 mpg27 - 28 mpg17.4 gal.417.60 / 539.40 mi.
2017 BMW M317 mpg26 mpg20 mpg15.8 gal.270.30 / 413.40 mi.
2017 Audi A324 - 26 mpg35 mpg29 mpg13.2 - 14.5 gal.343.20 / 462.00 - 348.00 / 449.50 mi.
2017 Audi S618 mpg27 mpg21 mpg19.8 gal.356.40 / 534.60 mi.

2016 Audi S6 MPG and Range

Trim NameMPG CityMPG HighwayMPG CombinedFuel Tank CapacityRange in Miles
Prestige quattro 4dr Sedan AWD (4.0L 8cyl Turbo 7AM)18 mpg27 mpg21 mpg19.8 gal.356.40 / 534.60 mi.
Premium Plus quattro 4dr Sedan AWD (4.0L 8cyl Turbo 7AM)18 mpg27 mpg21 mpg19.8 gal.356.40 / 534.60 mi.

2016 Audi S6 vs. Competitor's MPG and Range

Car NameMPG CityMPG HighwayMPG CombinedFuel Tank CapacityRange in Miles
2016 Audi S618 mpg27 mpg21 mpg19.8 gal.356.40 / 534.60 mi.
2016 BMW 5 Series16 - 23 mpg25 - 34 mpg19 - 27 mpg18.5 gal.296.00 / 462.50 - 425.50 / 629.00 mi.
2016 Jaguar XF20 mpg28 - 30 mpg23 - 24 mpg19.5 gal.390.00 / 546.00 mi.
2016 Mercedes-Benz E-Class20 - 28 mpg28 - 42 mpg23 - 33 mpg21.1 gal.422.00 / 590.80 mi.
2016 Cadillac CTS19 - 21 mpg28 - 31 mpg22 - 25 mpg19 gal.361.00 / 532.00 - 399.00 / 589.00 mi.

2015 Audi S6 MPG and Range

Trim NameMPG CityMPG HighwayMPG CombinedFuel Tank CapacityRange in Miles
quattro 4dr Sedan AWD (4.0L 8cyl Turbo 7AM)17 mpg27 mpg22 mpg19.8 gal.336.60 / 534.60 mi.

2015 Audi S6 vs. Competitor's MPG and Range

Car NameMPG CityMPG HighwayMPG CombinedFuel Tank CapacityRange in Miles
2015 Cadillac CTS18 - 20 mpg26 - 30 mpg22 - 25 mpg19 gal.342.0/494.0 - 380.00 / 570.00 mi.
2015 Audi S617 mpg27 mpg22 mpg19.8 gal.336.60 / 534.60 mi.
2015 BMW 5 Series16 - 23 mpg25 - 34 mpg19 - 28 mpg18.5 gal.296.00 / 462.50 - 425.50 / 629.00 mi.
2015 Mercedes-Benz E-Class20 mpg28 - 29 mpg23 - 24 mpg21.1 gal.422.00 / 590.80 mi.

2014 Audi S6 MPG and Range

Trim NameMPG CityMPG HighwayMPG CombinedFuel Tank CapacityRange in Miles
quattro 4dr Sedan AWD (4.0L 8cyl Turbo 7AM)17 mpg27 mpg22 mpg19.8 gal.336.60 / 534.60 mi.

2014 Audi S6 vs. Competitor's MPG and Range

Car NameMPG CityMPG HighwayMPG CombinedFuel Tank CapacityRange in Miles
2014 Audi S617 mpg27 mpg22 mpg19.8 gal.336.60 / 534.60 mi.
2014 BMW 5 Series16 - 23 mpg24 - 34 mpg20 - 28 mpg18.5 gal.296.0/444.0 - 425.50 / 629.00 mi.
2014 Jaguar XJ15 - 18 mpg23 - 27 mpg18 - 22 mpg21.7 gal.325.50 / 499.10 - 390.60 / 585.90 mi.

2013 Audi S6 MPG and Range

Trim NameMPG CityMPG HighwayMPG CombinedFuel Tank CapacityRange in Miles
Prestige quattro 4dr Sedan AWD (4.0L 8cyl Turbo 7AM)17 mpg27 mpg22 mpg19.8 gal.336.60 / 534.60 mi.

2013 Audi S6 vs. Competitor's MPG and Range

Car NameMPG CityMPG HighwayMPG CombinedFuel Tank CapacityRange in Miles
2013 Jaguar XF15 - 19 mpg23 - 30 mpg19 - 24 mpg18.4 gal.276.00 / 423.20 - 349.60 / 552.00 mi.
2013 Audi S617 mpg27 mpg22 mpg19.8 gal.336.60 / 534.60 mi.

2011 Audi S6 MPG and Range

Trim NameMPG CityMPG HighwayMPG CombinedFuel Tank CapacityRange in Miles
Prestige quattro 4dr Sedan AWD (5.2L 10cyl 6A)14 mpg19 mpg16 mpg21.1 gal.295.40 / 400.90 mi.

2011 Audi S6 vs. Competitor's MPG and Range

Car NameMPG CityMPG HighwayMPG CombinedFuel Tank CapacityRange in Miles
2011 Audi S614 mpg19 mpg16 mpg21.1 gal.295.40 / 400.90 mi.
2011 BMW 5 Series15 - 22 mpg22 - 32 mpg18 - 27 mpg18.5 gal.277.50 / 407.00 - 407.00 / 592.00 mi.
2011 Infiniti M3718 mpg26 mpg22 mpg20 gal.360.0/520.0 mi.
2011 Mercedes-Benz E-Class15 - 17 mpg23 - 24 mpg18 - 20 mpg21.1 - 23.5 gal.352.50 / 540.50 - 399.50 / 564.00 mi.

2010 Audi S6 MPG and Range

Trim NameMPG CityMPG HighwayMPG CombinedFuel Tank Capacity
5.2 Prestige 4dr quattro Sedan AWD (5.2L 10cyl 6A)14 mpg19 mpg16 mpg21.1 gal.

2010 Audi S6 vs. Competitor's MPG and Range

Car NameMPG CityMPG HighwayMPG CombinedFuel Tank Capacity
2010 Audi S614 mpg19 mpg16 mpg21.1 gal.

2009 Audi S6 MPG and Range

Trim NameMPG CityMPG HighwayMPG CombinedFuel Tank Capacity
5.2 Prestige 4dr quattro Sedan AWD (5.2L 10cyl 6A)14 mpg19 mpg16 mpg21.1 gal.

2009 Audi S6 vs. Competitor's MPG and Range

Car NameMPG CityMPG HighwayMPG CombinedFuel Tank Capacity
2009 Audi S614 mpg19 mpg16 mpg21.1 gal.

2008 Audi S6 MPG and Range

Trim NameMPG CityMPG HighwayMPG CombinedFuel Tank Capacity
5.2 4dr quattro Sedan AWD (5.2L 10cyl 6A)14 mpg19 mpg16 mpg21.1 gal.

2008 Audi S6 vs. Competitor's MPG and Range

Car NameMPG CityMPG HighwayMPG CombinedFuel Tank Capacity
2008 Audi S614 mpg19 mpg16 mpg21.1 gal.

2007 Audi S6 MPG and Range

Trim NameMPG CityMPG HighwayMPG CombinedFuel Tank Capacity
5.2 4dr quattro Sedan AWD (5.2L 10cyl 6A)15 mpg21 mpg16 mpg21.1 gal.

2007 Audi S6 vs. Competitor's MPG and Range

Car NameMPG CityMPG HighwayMPG CombinedFuel Tank Capacity
2007 Audi S615 mpg21 mpg16 mpg21.1 gal.

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