Car comparison

AUDI A6 Sedan (C8) 55 TFSI V6vsAUDI A6 (4F/C6) · Facelift 2008 4.2 FSI V8

Compare specs, acceleration, fuel consumption, dimensions, practicality, and estimated running costs side by side.

New comparison

AUDI A6 Sedan (C8)

55 TFSI V6

340 hp2995 ccGasolineAWDAutomaticTurbochargedSedan2018-2023
VS

AUDI A6 (4F/C6) · Facelift 2008

4.2 FSI V8

350 hp4163 ccGasolineAWDAutomaticNaturally aspiratedSedan2008-2011

Comparison overview

Use the estimates as comparison hints and verify exact figures before making decisions.

Best choices

AUDI A6 Sedan (C8) 55 TFSI V6

  • Quickest 0-100 km/h
    5.1 s
  • Fastest top speed
    265 km/h
    165 mph Unrestricted
    250 km/h
    155 mph Restricted
  • Highest torque
    500 Nm
    369 lb-ft
  • Lightest
    1,760 kg
    3,880 lb
  • Lowest combined fuel consumption
    7.1 L/100 km
    33.1 mpg US
    39.8 mpg UK
  • Lowest city consumption
    9.2 L/100 km
    25.6 mpg US
    30.7 mpg UK
  • Lowest highway consumption
    5.8 L/100 km
    40.6 mpg US
    48.7 mpg UK
  • Lowest CO2 emissions
    161 g/km
  • Best estimated range
    887 km
    551 mi
  • Best overall score
    73/100
  • Best performance score
    71/100
  • Best economy score
    88/100

Specification comparison

Specification comparison
ModelAUDIA6 Sedan (C8)55 TFSI V6AUDIA6 (4F/C6)Facelift 20084.2 FSI V8
Power
340hp254kW
350hp261kW
Torque
500Nm369lb-ft
440Nm325lb-ft
Curb weight
1,760kg3,880lb
1,770kg3,902lb
Gross weight
2,400kg5,291lb
2,350kg5,181lb
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Calculated
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Calculated
To 99% top speed
50.9s99% target: 262 km/h / 163 mph
Calculated
61.7s99% target: 262 km/h / 163 mph
Calculated
0-100 km/h
5.1s
6.1s
0-200 km/h
15.3s
Calculated
18.4s
Calculated
0-60 mph
4.9s
Calculated
5.8s
Calculated
Fuel consumption
7.1L/100 km33.1mpg US39.8mpg UK
10.2L/100 km23.1mpg US27.7mpg UK
Fuel consumption city
9.2L/100 km25.6mpg US30.7mpg UK
14.8L/100 km15.9mpg US19.1mpg UK
Fuel consumption highway
5.8L/100 km40.6mpg US48.7mpg UK
7.5L/100 km31.4mpg US37.7mpg UK
Quarter mile
13.0s
Calculated
14.0s
Calculated
Power-to-weight
193hp/t144kW/t88hp/1000 lb
Calculated
198hp/t147kW/t90hp/1000 lb
Calculated
Torque-to-weight
284Nm/t190lb-ft/ton
Calculated
249Nm/t166lb-ft/ton
Calculated
Estimated range
887km551mi
Calculated
784km487mi
Calculated
Displacement
2,995cc183cu in
4,163cc254cu in
Length
4,939mm194in
4,927mm194in
Width
1,886mm74in
1,855mm73in
Height
1,457mm57in
1,459mm57in
Wheelbase
2,924mm115in
2,843mm112in
Front track
1,630mm64in
1,612mm63in
Rear track
1,617mm64in
1,618mm64in
Trunk volume
530L
-
Max trunk volume-
546L
Doors
4
4
Seats
5
5
Fuel tank
63L
80L
CO2 emissions
161g/km
244g/km

Performance charts

Use the estimates as comparison hints and verify exact figures before making decisions.

Dyno simulation

Estimated stock-style power and torque curves by engine speed.

AUDI A6 Sedan (C8) 55 TFSI V6AUDI A6 (4F/C6) Facelift 2008 4.2 FSI V8PowerTorque
  • AUDI A6 Sedan (C8) 55 TFSI V6: Power / Torque
  • AUDI A6 (4F/C6) Facelift 2008 4.2 FSI V8: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
AUDIA6 Sedan (C8)55 TFSI V65,000-6,400 rpm1,370-4,500 rpm6,650 rpm
AUDIA6 (4F/C6)Facelift 20084.2 FSI V86,800 rpm3,500 rpm7,050 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricAUDIA6 Sedan (C8)55 TFSI V6AUDIA6 (4F/C6)Facelift 20084.2 FSI V8
Acceleration checkpoints
0-60 mph
0-97 km/h
4.9 s
5.8 s
0-100 km/h
0-62 mph
5.1 s
6.1 s
0-200 km/h
0-124 mph
15.3 s
18.4 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Likely limited
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Likely limited
Drag race simulation
60 ft
18 m
2.4 s
2.6 s
330 ft
101 m
5.9 s
6.4 s
1/8 mile
201 m
8.7 s
9.4 s
1000 ft
305 m
11.1 s
11.9 s
1/4 mile
402 m
13.0 s
14.0 s
Trap speed
1/4 mile
402 m
185 km/h
115 mph
174 km/h
108 mph

Power comparison

Bar comparison chart for Power. Higher is better · hp / kW

Chart data table
VehicleValue
AUDIA6 Sedan (C8)55 TFSI V6
340 hp
254 kW
AUDIA6 (4F/C6)Facelift 20084.2 FSI V8
350 hp
261 kW

AUDI A6 (4F/C6) Facelift 2008 4.2 FSI V8 has 10 hp more than AUDI A6 Sedan (C8) 55 TFSI V6.

The biggest power difference is between AUDI A6 Sedan (C8) 55 TFSI V6 and AUDI A6 (4F/C6) Facelift 2008 4.2 FSI V8: 10 hp (7 kW).

Torque comparison

Bar comparison chart for Torque. Higher is better · Nm / lb-ft

Chart data table
VehicleValue
AUDIA6 Sedan (C8)55 TFSI V6
500 Nm
369 lb-ft
AUDIA6 (4F/C6)Facelift 20084.2 FSI V8
440 Nm
325 lb-ft

Curb weight comparison

Bar comparison chart for Curb weight. Lower is better · kg / lb

Chart data table
VehicleValue
AUDIA6 Sedan (C8)55 TFSI V6
1,760 kg
3,880 lb
AUDIA6 (4F/C6)Facelift 20084.2 FSI V8
1,770 kg
3,902 lb

Top speed without limiter comparison

Bar comparison chart for Top speed without limiter. Higher is better · km/h / mph

Chart data table
VehicleValue
AUDIA6 Sedan (C8)55 TFSI V6
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
AUDIA6 (4F/C6)Facelift 20084.2 FSI V8
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph

0-100 km/h comparison

Bar comparison chart for 0-100 km/h. Lower is better · seconds

Chart data table
VehicleValue
AUDIA6 Sedan (C8)55 TFSI V65.1 s
AUDIA6 (4F/C6)Facelift 20084.2 FSI V86.1 s

Although AUDI A6 (4F/C6) Facelift 2008 4.2 FSI V8 has more power, AUDI A6 Sedan (C8) 55 TFSI V6 is quicker from 0-100 km/h.

The biggest 0-100 km/h difference is between AUDI A6 Sedan (C8) 55 TFSI V6 and AUDI A6 (4F/C6) Facelift 2008 4.2 FSI V8: 1.0 s.

Fuel consumption comparison

Bar comparison chart for Fuel consumption. Lower is better · L/100 km / mpg US / mpg UK

Chart data table
VehicleValue
AUDIA6 Sedan (C8)55 TFSI V6
7.1 L/100 km
33.1 mpg US
39.8 mpg UK
AUDIA6 (4F/C6)Facelift 20084.2 FSI V8
10.2 L/100 km
23.1 mpg US
27.7 mpg UK

The biggest fuel consumption difference is between AUDI A6 Sedan (C8) 55 TFSI V6 and AUDI A6 (4F/C6) Facelift 2008 4.2 FSI V8: 3.1 L/100 km.

Power-to-weight comparison

Bar comparison chart for Power-to-weight. Higher is better · hp/t / kW/t

Chart data table
VehicleValue
AUDIA6 Sedan (C8)55 TFSI V6
193 hp/t
144 kW/t
5.2 kg/hp
AUDIA6 (4F/C6)Facelift 20084.2 FSI V8
198 hp/t
147 kW/t
5.1 kg/hp

Estimated range comparison

Bar comparison chart for Estimated range. Higher is better · km / mi

Chart data table
VehicleValue
AUDIA6 Sedan (C8)55 TFSI V6
887 km
551 mi
AUDIA6 (4F/C6)Facelift 20084.2 FSI V8
784 km
487 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
AUDIA6 Sedan (C8)55 TFSI V6
340 hp
254 kW
5.1 s
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
AUDIA6 (4F/C6)Facelift 20084.2 FSI V8
350 hp
261 kW
6.1 s
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph

Most attractive quadrant

Scatter chart with performance score on the X axis and practicality score on the Y axis.

Chart data table
VehiclePerformance scorePracticality score
AUDIA6 Sedan (C8)55 TFSI V6
Power
340 hp
254 kW
0-100 km/h5.1 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Doors/seats
4 doors
5 seats
Trunk
530 L
18.7 cu ft
Length
4,939 mm
194.4 in
Height
1,457 mm
57.4 in
AUDIA6 (4F/C6)Facelift 20084.2 FSI V8
Power
350 hp
261 kW
0-100 km/h6.1 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Doors/seats
4 doors
5 seats
Trunk
546 L
19.3 cu ft
Length
4,927 mm
194.0 in
Height
1,459 mm
57.4 in

Performance vs fuel economy

Cars closer to the top-right corner combine stronger performance with better fuel economy scores.

Performance vs fuel economy data table
VehiclePerformance scoreFuel economy score
AUDIA6 Sedan (C8)55 TFSI V6
Power
340 hp
254 kW
0-100 km/h5.1 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
7.1 L/100 km
33.1 mpg US
39.8 mpg UK
AUDIA6 (4F/C6)Facelift 20084.2 FSI V8
Power
350 hp
261 kW
0-100 km/h6.1 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
10.2 L/100 km
23.1 mpg US
27.7 mpg UK

AUDI A6 Sedan (C8) 55 TFSI V6 is closest to the top-right balance target for performance and fuel economy.

Acceleration vs fuel consumption

Cars closer to the lower-left corner offer a better mix of quick acceleration and low fuel consumption.

Acceleration vs fuel consumption data table
VehicleFuel consumption, L/100 km0-100 km/h, s
AUDIA6 Sedan (C8)55 TFSI V6
7.1 L/100 km
33.1 mpg US
39.8 mpg UK
5.1 s
AUDIA6 (4F/C6)Facelift 20084.2 FSI V8
10.2 L/100 km
23.1 mpg US
27.7 mpg UK
6.1 s

Power-to-weight vs fuel consumption

The shaded area favors higher power-to-weight with lower combined fuel consumption.

Power-to-weight vs fuel consumption data table
VehiclePower-to-weight, hp/tFuel consumption, L/100 km
AUDIA6 Sedan (C8)55 TFSI V6
193 hp/t
144 kW/t
5.2 kg/hp
7.1 L/100 km
33.1 mpg US
39.8 mpg UK
AUDIA6 (4F/C6)Facelift 20084.2 FSI V8
198 hp/t
147 kW/t
5.1 kg/hp
10.2 L/100 km
23.1 mpg US
27.7 mpg UK

Detailed score breakdown

Detailed score breakdown
VehicleAUDIA6 Sedan (C8)55 TFSI V6AUDIA6 (4F/C6)Facelift 20084.2 FSI V8
Power
340 hp
254 kW
350 hp
261 kW
Torque
500 Nm
369 lb-ft
440 Nm
325 lb-ft
Acceleration
5.1 s
6.1 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Lightness
1,760 kg
3,880 lb
1,770 kg
3,902 lb
Fuel consumption
7.1 L/100 km
33.1 mpg US
39.8 mpg UK
10.2 L/100 km
23.1 mpg US
27.7 mpg UK
Practicality
Doors/seats
4 doors
5 seats
Trunk
530 L
18.7 cu ft
Length
4,939 mm
194.4 in
Height
1,457 mm
57.4 in
Doors/seats
4 doors
5 seats
Trunk
546 L
19.3 cu ft
Length
4,927 mm
194.0 in
Height
1,459 mm
57.4 in
Range score
887 km
551 mi
784 km
487 mi
CO2 score
161 g/km
244 g/km
Trunk score
530 L
18.7 cu ft
546 L
19.3 cu ft
Power-to-weight score
193 hp/t
144 kW/t
5.2 kg/hp
198 hp/t
147 kW/t
5.1 kg/hp
Overall
Fixed score
Fixed score

Fuel cost and annual usage

Estimate running costs from combined consumption, your annual distance, and the fuel price in your local currency.

Enter the fuel price in your local currency, for example €/L, $/gal, £/L or any other local currency.

LC = Local Currency

Fuel cost and annual usage
VehicleAUDI A6 Sedan (C8) 55 TFSI V6AUDI A6 (4F/C6) Facelift 2008 4.2 FSI V8
Consumption7.1 L/100 km33.1 mpg US39.8 mpg UK10.2 L/100 km23.1 mpg US27.7 mpg UK
Cost / 100 km12.42 LC100 km17.85 LC100 km
Cost / 100 mi20.00 LC100 mi28.73 LC100 mi
Annual fuel used1,065 L281 US gal234 UK gal1,530 L404 US gal337 UK gal
Annual fuel cost1,864 LC/year2,678 LC/year

Head-to-head comparisons

AUDI A6 Sedan (C8) 55 TFSI V6

  • Has 60 Nm more
  • Is 10 kg lighter
  • Is 1.0 s quicker from 0-100 km/h
  • Uses 3.1 L/100 km less fuel
  • Has 103 km (64 mi) more estimated range
  • Emits 83 g/km less CO2

Pros

  • Quickest 0-100 km/h in this comparison
  • Highest top speed
  • Highest torque
  • Lightest
  • Lowest combined fuel consumption
  • Best estimated range

Cons

  • Lowest power
  • Smallest trunk

AUDI A6 (4F/C6) Facelift 2008 4.2 FSI V8

  • Has 10 hp more
  • Has 5 hp/t better power-to-weight
  • Has 16 L more trunk volume

Pros

  • Most powerful
  • Best power-to-weight ratio
  • Largest trunk

Cons

  • Slowest 0-100 km/h
  • Highest combined fuel consumption
  • Heaviest
  • Highest CO2 emissions

Choose cars to compare

Brand
Model
Generation
Engine or modification
AUDI A6 Sedan (C8) 55 TFSI V6
AUDI A6 (4F/C6) 4.2 FSI V8
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2 vehicles selected

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