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2018 Audi S8

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Rating8.7

Ranked #6 in 

Fullsize Sedan
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$115,900
Starting Price 

Year

Nathan Dyer's image
Nathan Dyer 

Senior Editor,

Updated on September 26, 2023

ProsConsWhat's New

Thrilling acceleration from the potent turbocharged powertrain

Unintuitive proprietary music interface and no Android Auto or Apple CarPlay

No major changes for 2018

Outstanding handling considering its size and segment

Unimpressive cargo space for a full-size sedan

Exceptionally well-made cabin with top-class materials

Price flies up high with options

Specs & Features

$115,900

price

605 hp @ 6100 rpm

horsepower

517 lb.-ft. @ 1750 rpm

torque

TBD

transmission

4.0L 8cyl AWD 8A

engine

-

basic warranty

Overview

The 2018 Audi S8 Sedan makes for an excellent contender in the fullsize sedan. With a single on offer, the Audi S8 has a base MSRP of $115,900, competing directly with the Mercedes-Benz AMG S 63 Sedan, the BMW Alpina B7, and the Jaguar XJR575. Only a 4.0L turbocharged V8 engine is offered, mated to an 8-speed automatic transmission. Together, they produce 605 horsepower and 517 lb-ft of torque. Accelerating from 0-60 in 3.7 seconds, the S8 Sedan maintains a combined fuel economy of 18 MPG. Audi offers the S8 Sedan in 12 stunning colors, with the Oolong Gray Metallic being a particular favorite of ours.

Buying Advice

The 2018 Audi S8 Sedan is a powerful and luxurious sedan in the segment. It is available in a single, well-loaded trim while there are some options and packages offered. We recommend adding the Executive Plus package that loads the S8 with features including a heated steering wheel heated outboard rear seats, rear-seat pass-through, Audi adaptive cruise control with stop & go, Audi active lane assist, and Audi pre sense plus. 

Trims

    plus
    $115,900 onwards
    • Driver Lumbar support
    • Dual Zone Front Automatic Air Conditioning
    • Front & rear fog/driving lights
    • Navigation system
    • Parking assist
    • Rain Sensing Windshield wipers

Compare to similar cars

7.3
2018 BMW ALPINA B6

Price

$124,300

Engine

Gasoline

Rating

7.26

Horsepower

600 hp @ 6000 rpm

Torque

590 lb.-ft. @ 3500 rpm

Capacity

5

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8.5
2018 Mercedes-Benz AMG S 63

$147,500- $179,500

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8.47

603 hp @ 5500 rpm

664 lb.-ft. @ 2750 rpm

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7.9
2018 BMW M760i

$156,700

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7.86

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590 lb.-ft. @ 1550 rpm

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7.4
2018 Mercedes-Benz AMG S 65

$229,500- $250,900

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7.38

621 hp @ 4800 rpm

738 lb.-ft. @ 2300 rpm

5

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8.6
2018 Maserati Quattroporte

$105,600- $136,600

Gasoline

8.61

424 hp @ 5750 rpm

428 lb.-ft. @ 2250 rpm

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8.2
2018 Audi RS 7

$113,900- $132,675

Gasoline

8.18

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516 lb.-ft. @ 1750 rpm

4

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8.8
2018 BMW ALPINA B7

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8.7
2018 Audi S8

$115,900

Gasoline

8.7

605 hp @ 6100 rpm

517 lb.-ft. @ 1750 rpm

5

Read Review

2018 Audi S8 vs competitor's 0-60

    Car Name
    0-60 MPH
    Quarter Mile
    Top Speed
    		SourceCompare
    2018 Audi S8

    Ranked #3

    		3.6 sec12.0 sec190 mph
    		3.4 sec12.7 sec193 mph
    		3.5 sec--
    		3.7 sec--
    		3.7 sec12.0 sec174 mph
    		4.08 sec-121 mph
    Read More

    2018 Audi S8 vs competitor's MPG

      Car Name
      MPG City
      MPG Highway
      MPG Combined
      Fuel Tank Capacity
      Range (C/H)
      		SourceCompare
      2018 Audi S8

      Ranked #3

      		14 mpg24 mpg18 mpg21.7 gal.303.8/520.8 mi.
      		17 mpg26 mpg20 mpg24.6 gal.418.2/639.6 mi.
      		16 mpg25 mpg19 mpg18.5 gal.296/462.5 mi.
      		16 mpg25 mpg19 mpg20.6 gal.329.6/515 mi.
      		16 mpg23 mpg18 mpg21.1 gal.337.6/485.3 mi.
      		14 mpg24 mpg17 mpg19.8 gal.277.2/475.2 mi.

      2018 Audi S8 vs competitor's dimensions

        Car Name
        Length
        Width
        Height
        Ground Clearance
        Wheelbase
        		SourceCompare
        2018 Audi S8

        Ranked #6

        		202.6 in.76.7 in.57.4 in.5 in.117.9 in.
        		208.5 in.74.8 in.59 in.5 in.124.6 in.
        		207.2 in.76.7 in.58.3 in.6 in.124.8 in.
        		206.7 in.74.9 in.58.7 in.5.3 in.126.4 in.
        		206.6 in.74.9 in.58.2 in.5.3 in.126.4 in.
        		206.5 in.75.4 in.58.7 in.5 in.124.6 in.

        2018 Audi S8 vs competitor's trunk space

          Car Name
          Trunk Capacity
          Passenger Volume
          Max Trunk Volume
          		SourceCompare
          2018 Audi S8

          Ranked #7

          		14.2 cu.ft.115.1 cu.ft.-
          		18.7 cu.ft.-18.7 cu.ft.
          		13 cu.ft.97.3 cu.ft.13 cu.ft.
          		24.5 cu.ft.-49.1 cu.ft.
          		18.2 cu.ft.96.9 cu.ft.18.2 cu.ft.
          		16.6 cu.ft.-16.6 cu.ft.

          2018 Audi S8 vs competitor's cargo space

            Car Name
            Cargo Volume
            Cargo Volume w/ Seat Area
            Max Cargo Volume
            Bed Length
            		SourceCompare
            2018 Audi S8

            Ranked #1

            		-14.2 cu.ft.-98 ft.
            		16.6 cu.ft.16.6 cu.ft.16.6 cu.ft.-
            		20.8 cu.ft.18.2 cu.ft.18.2 cu.ft.-
            		16.6 cu.ft.16.6 cu.ft.16.6 cu.ft.-
            		49.1 cu.ft.24.5 cu.ft.49.1 cu.ft.-
            		89.7 cu.ft.13 cu.ft.13 cu.ft.-

            2018 Audi S8 vs competitor's towing capacity

              Car Name
              Payload Capacity
              Weight
              		SourceCompare
              2018 Audi S8

              Ranked #1

              		1213 lbs.4685 lbs.
              		905 lbs.4820 lbs.
              		959 lbs.5128 lbs.
              		-4497 lbs.
              		1444 lbs.4564 lbs.
              		840 lbs.4780 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 RS 3

              Horsepower : 400 hp @ 7000 rpm

              MPG Combined : 22 mpg

              0-60 : 3.9 sec

              #7

              2018 Audi TT RS

              Horsepower : 400 hp @ 7000 rpm

              MPG Combined : 22 mpg

              0-60 : 3.6 sec

              #8

              2018 Audi SQ5

              Horsepower : 354 hp @ 6000 rpm

              MPG Combined : 21 mpg

              0-60 : 5.1 sec

              #9

              2018 Audi S4

              Horsepower : 354 hp @ 5400 rpm

              MPG Combined : 24 mpg

              0-60 : 4.4 sec

              #10
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