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2018 Audi S6

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Rating8.3

Ranked #10 in 

Midsize Sedan
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$71,900 - $74,400
Starting Price 

Year

Nathan Dyer's image
Nathan Dyer 

Senior Editor,

Updated on November 3, 2023

ProsConsWhat's New

The infotainment system is easy to get used to

Limited cargo space

No major updates

Potent powertrain

Subpar fuel economy

Driving dynamics that boost confidence

Specs & Features

$71,900

price

450 hp

horsepower

406 lb.-ft. @ 1400 rpm

torque

7-Speed Automated Manual

transmission

4.0L 8cyl AWD 7AM

engine

-

basic warranty

Overview

Competing in the midsize sedan segment, the 2018 Audi S6 Sedan is a direct competitor to the BMW M550i, the Lexus GS F, and the Cadillac CTS-V Sport. The S6 starts off at an MSRP of $71,900, going all the up to $74,400, with 2 trims in the lineup. Each trim is offered with a 4.0L Twin-Turbo V8 engine and a 7-speed dual-clutch automatic transmission, producing 450 horsepower and 406 lb-ft of torque. Through this powertrain, the S6 manages a 0-60 of 3.9 seconds and a combined fuel economy of 18 MPG.

Buying Advice

The wiser choice is the base Premium Plus trim. Furthermore, we recommend the Driver Assistance Package and Cold Weather Package. Meanwhile, if you want to raise the performance bar, the S Sport Package is also offered.

Trims

    Premium Plus
    $71,900 onwards
    • 20-inch silver aluminum Wheels
    • Driver Lumbar support
    • Dual Zone Front Automatic Air Conditioning
    • Front & rear fog/driving lights
    • Navigation system
    • Parking assist
    • Rain Sensing Windshield wipers
    Prestige
    $74,400 onwards
    • Engine: 4.0L 8cyl AWD 7AM
    • Horsepower: 450 hp hp
    • Torque: 406 lb.-ft. @ 1400 rpm
    • 0-60 mph: 4.4 sec
    • Top Speed: 155 mph
    • Fuel Economy Combined: 18 mpg

Compare to similar cars

8.3
2018 Audi S6

Price

$71,900- $74,400

Engine

Gasoline

Rating

8.29

Horsepower

450 hp @ 5800 rpm

Torque

406 lb.-ft. @ 1400 rpm

Capacity

5

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7.7
2018 Alfa Romeo Giulia

$38,195- $73,700

Gasoline

7.7

280 hp @ 5200 rpm

306 lb.-ft. @ 2000 rpm

5

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8.3
2018 Audi A3

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Gasoline

8.35

186 hp @ 4400 rpm

221 lb.-ft. @ 1600 rpm

5

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7.3
2018 Audi A6

$49,700- $61,400

Gasoline

7.27

252 hp @ 5000 rpm

273 lb.-ft. @ 1600 rpm

5

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8.2
2018 Audi RS 7

$113,900- $132,675

Gasoline

8.18

560 hp @ 5700 rpm

516 lb.-ft. @ 1750 rpm

4

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8.6
2018 Audi S7

$81,200- $83,150

Gasoline

8.63

450 hp @ 5800 rpm

406 lb.-ft. @ 1400 rpm

4

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8.8
2018 BMW 5 Series

$52,650- $73,900

Gasoline

8.81

248 hp @ 5200 rpm

258 lb.-ft. @ 1450 rpm

5

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8.4
2018 BMW M5

$102,600

Gasoline

8.45

600 hp @ 6000 rpm

553 lb.-ft. @ 1800 rpm

5

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7.8
2018 Cadillac CT6

$54,095- $88,295

Gasoline

7.83

265 hp @ 5500 rpm

295 lb.-ft. @ 3000 rpm

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7.8
2018 Cadillac CTS

$46,295- $71,095

Gasoline

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268 hp @ 5600 rpm

295 lb.-ft. @ 3000 rpm

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2018 Audi S6 vs competitor's 0-60

    Car Name
    0-60 MPH
    Quarter Mile
    Top Speed
    		SourceCompare
    2018 Audi S6

    Ranked #5

    		4.4 sec13.1 sec155 mph
    2018 BMW M5

    Ranked #1

    		3 sec11.3 sec162 mph
    		3.7 sec11.7 sec-
    		3.7 sec12.0 sec174 mph
    		3.8 sec--
    		3.89 sec--
    Read More

    2018 Audi S6 vs competitor's MPG

      Car Name
      MPG City
      MPG Highway
      MPG Combined
      Fuel Tank Capacity
      Range (C/H)
      		SourceCompare
      2018 Audi S6

      Ranked #8

      		16 mpg24 mpg18 mpg19.8 gal.316.8/475.2 mi.
      2018 Audi A3

      Ranked #1

      		26 mpg35 mpg29 mpg13.2 gal.377/507.5 mi.
      2018 Audi A6

      Ranked #2

      		25 mpg34 mpg28 mpg19.8 gal.495/673.2 mi.
      		25 mpg34 mpg28 mpg16.6 gal.348.6/498 mi.
      		25 mpg34 mpg28 mpg19.5 gal.487.5/663 mi.
      		24 mpg34 mpg27 mpg18 gal.432/612 mi.

      2018 Audi S6 vs competitor's dimensions

        Car Name
        Length
        Width
        Height
        Ground Clearance
        Wheelbase
        		SourceCompare
        2018 Audi S6

        Ranked #14

        		194.4 in.73.8 in.56.8 in.5 in.114.8 in.
        		204.9 in.75.4 in.58.9 in.5.1 in.124.4 in.
        		204.1 in.74 in.58 in.7 in.122.4 in.
        		197.6 in.72.2 in.57.2 in.5 in.114.6 in.
        		197.3 in.75.2 in.55.8 in.4 in.114.8 in.
        		196.7 in.81.7 in.55.4 in.5 in.113.2 in.

        2018 Audi S6 vs competitor's trunk space

          Car Name
          Trunk Capacity
          Passenger Volume
          Max Trunk Volume
          		SourceCompare
          2018 Audi S6

          Ranked #8

          		14.1 cu.ft.63 cu.ft.57.5 cu.ft.
          		12 cu.ft.95.4 cu.ft.218.9 cu.ft.
          2018 Audi S7

          Ranked #2

          		24.5 cu.ft.127.3 cu.ft.97.1 cu.ft.
          		47.2 cu.ft.98.8 cu.ft.89.7 cu.ft.
          		13.7 cu.ft.97 cu.ft.13.7 cu.ft.
          		11 cu.ft.104.3 cu.ft.11 cu.ft.

          2018 Audi S6 vs competitor's cargo space

            Car Name
            Cargo Volume
            Cargo Volume w/ Seat Area
            Max Cargo Volume
            Bed Length
            		SourceCompare
            2018 Audi S6

            Ranked #1

            		57.5 cu.ft.14.1 cu.ft.57.5 cu.ft.76 ft.
            2018 Audi A3

            Ranked #2

            		15.4 cu.ft.12.3 cu.ft.8.2 cu.ft.67 ft.
            		48.9 cu.ft.12.6 cu.ft.48.9 cu.ft.-
            		49.1 cu.ft.24.5 cu.ft.49.1 cu.ft.-
            		1.5 cu.ft.15.7 cu.ft.15.7 cu.ft.79 ft.
            		27.1 cu.ft.11 cu.ft.11 cu.ft.-

            2018 Audi S6 vs competitor's towing capacity

              Car Name
              Payload Capacity
              Weight
              		SourceCompare
              2018 Audi S6

              Ranked #1

              		-4486 lbs.
              		1104 lbs.3666 lbs.
              		-4515 lbs.
              		905 lbs.3521 lbs.
              		1153 lbs.3652 lbs.
              		-4145 lbs.

              Top Audi Cars

              2018 Audi S8

              Horsepower : 605 hp @ 6100 rpm

              MPG Combined : 18 mpg

              0-60 : 3.6 sec

              #1

              2018 Audi RS 7

              Horsepower : 560 hp @ 5700 rpm

              MPG Combined : 17 mpg

              0-60 : 3.7 sec

              #2

              2018 Audi R8

              Horsepower : 532 hp @ 7800 rpm

              MPG Combined : 18 mpg

              0-60 : 3.4 sec

              #3

              2018 Audi S7

              Horsepower : 450 hp @ 5800 rpm

              MPG Combined : 18 mpg

              0-60 : 4.5 sec

              #4

              2018 Audi S6

              Horsepower : 450 hp

              MPG Combined : 18 mpg

              0-60 : 4.4 sec

              #5

              2018 Audi RS 5

              Horsepower : 444 hp @ 5700 rpm

              MPG Combined : 21 mpg

              0-60 : 3.7 sec

              #6

              2018 Audi TT RS

              Horsepower : 400 hp @ 7000 rpm

              MPG Combined : 22 mpg

              0-60 : 3.6 sec

              #7

              2018 Audi RS 3

              Horsepower : 400 hp @ 7000 rpm

              MPG Combined : 22 mpg

              0-60 : 3.9 sec

              #8

              2018 Audi SQ5

              Horsepower : 354 hp @ 6000 rpm

              MPG Combined : 21 mpg

              0-60 : 5.1 sec

              #9

              2018 Audi S5

              Horsepower : 354 hp @ 5400 rpm

              MPG Combined : 24 mpg

              0-60 : 4.4 sec

              #10
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