Car comparison

AUDI A6 (4F/C6) · Facelift 2008 4.2 FSI V8vsAUDI A6 Sedan (C8) 50 TDI V6

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

New comparison

AUDI A6 (4F/C6) · Facelift 2008

4.2 FSI V8

350 hp4163 ccGasolineAWDAutomaticNaturally aspiratedSedan2008-2011
VS

AUDI A6 Sedan (C8)

50 TDI V6

286 hp2967 ccDieselAWDAutomaticTurbochargedSedan2018-2020

Comparison overview

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

Best choices

AUDI A6 Sedan (C8) 50 TDI V6

  • Quickest 0-100 km/h
    5.5 s
  • Highest torque
    620 Nm
    457 lb-ft
  • Lowest combined fuel consumption
    5.8 L/100 km
    40.6 mpg US
    48.7 mpg UK
  • Lowest city consumption
    6.4 L/100 km
    36.8 mpg US
    44.1 mpg UK
  • Lowest highway consumption
    5.4 L/100 km
    43.6 mpg US
    52.3 mpg UK
  • Lowest CO2 emissions
    150 g/km
  • Best estimated range
    1,086 km
    675 mi
  • Best overall score
    72/100
  • Best performance score
    69/100
  • Best economy score
    91/100

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

  • Fastest top speed
    265 km/h
    165 mph Unrestricted
    250 km/h
    155 mph Restricted
  • Most powerful
    350 hp
    261 kW
  • Lightest
    1,770 kg
    3,902 lb
  • Best power-to-weight
    198 hp/t
    147 kW/t
    5.1 kg/hp
  • Largest trunk
    546 L
  • Best practicality score
    78/100

Specification comparison

Specification comparison
ModelAUDIA6 (4F/C6)Facelift 20084.2 FSI V8AUDIA6 Sedan (C8)50 TDI V6
Power
350hp261kW
286hp213kW
Torque
440Nm325lb-ft
620Nm457lb-ft
Curb weight
1,770kg3,902lb
1,825kg4,023lb
Gross weight
2,350kg5,181lb
2,475kg5,456lb
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Calculated
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Calculated
To 99% top speed
61.7s99% target: 262 km/h / 163 mph
Calculated
56.1s99% target: 257 km/h / 160 mph
Calculated
0-100 km/h
6.1s
5.5s
0-200 km/h
18.4s
Calculated
17.2s
Calculated
0-60 mph
5.8s
Calculated
5.3s
Calculated
Fuel consumption
10.2L/100 km23.1mpg US27.7mpg UK
5.8L/100 km40.6mpg US48.7mpg UK
Fuel consumption city
14.8L/100 km15.9mpg US19.1mpg UK
6.4L/100 km36.8mpg US44.1mpg UK
Fuel consumption highway
7.5L/100 km31.4mpg US37.7mpg UK
5.4L/100 km43.6mpg US52.3mpg UK
Quarter mile
14.0s
Calculated
13.5s
Calculated
Power-to-weight
198hp/t147kW/t90hp/1000 lb
Calculated
157hp/t117kW/t71hp/1000 lb
Calculated
Torque-to-weight
249Nm/t166lb-ft/ton
Calculated
340Nm/t227lb-ft/ton
Calculated
Estimated range
784km487mi
Calculated
1,086km675mi
Calculated
Displacement
4,163cc254cu in
2,967cc181cu in
Length
4,927mm194in
4,939mm194in
Width
1,855mm73in
1,886mm74in
Height
1,459mm57in
1,457mm57in
Wheelbase
2,843mm112in
2,924mm115in
Front track
1,612mm63in
1,630mm64in
Rear track
1,618mm64in
1,617mm64in
Trunk volume-
530L
Max trunk volume
546L
-
Doors
4
4
Seats
5
5
Fuel tank
80L
63L
CO2 emissions
244g/km
150g/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 (4F/C6) Facelift 2008 4.2 FSI V8AUDI A6 Sedan (C8) 50 TDI V6PowerTorque
  • AUDI A6 (4F/C6) Facelift 2008 4.2 FSI V8: Power / Torque
  • AUDI A6 Sedan (C8) 50 TDI V6: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
AUDIA6 (4F/C6)Facelift 20084.2 FSI V86,800 rpm3,500 rpm7,050 rpm
AUDIA6 Sedan (C8)50 TDI V63,500-4,000 rpm2,250-3,000 rpm4,250 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricAUDIA6 (4F/C6)Facelift 20084.2 FSI V8AUDIA6 Sedan (C8)50 TDI V6
Acceleration checkpoints
0-60 mph
0-97 km/h
5.8 s
5.3 s
0-100 km/h
0-62 mph
6.1 s
5.5 s
0-200 km/h
0-124 mph
18.4 s
17.2 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Likely limited
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Likely limited
Drag race simulation
60 ft
18 m
2.6 s
2.4 s
330 ft
101 m
6.4 s
6.1 s
1/8 mile
201 m
9.4 s
9.0 s
1000 ft
305 m
11.9 s
11.4 s
1/4 mile
402 m
14.0 s
13.5 s
Trap speed
1/4 mile
402 m
174 km/h
108 mph
178 km/h
111 mph

Power comparison

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

Chart data table
VehicleValue
AUDIA6 (4F/C6)Facelift 20084.2 FSI V8
350 hp
261 kW
AUDIA6 Sedan (C8)50 TDI V6
286 hp
213 kW

AUDI A6 (4F/C6) Facelift 2008 4.2 FSI V8 has 64 hp more than AUDI A6 Sedan (C8) 50 TDI V6.

The biggest power difference is between AUDI A6 Sedan (C8) 50 TDI V6 and AUDI A6 (4F/C6) Facelift 2008 4.2 FSI V8: 64 hp (48 kW).

Torque comparison

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

Chart data table
VehicleValue
AUDIA6 (4F/C6)Facelift 20084.2 FSI V8
440 Nm
325 lb-ft
AUDIA6 Sedan (C8)50 TDI V6
620 Nm
457 lb-ft

Curb weight comparison

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

Chart data table
VehicleValue
AUDIA6 (4F/C6)Facelift 20084.2 FSI V8
1,770 kg
3,902 lb
AUDIA6 Sedan (C8)50 TDI V6
1,825 kg
4,023 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 (4F/C6)Facelift 20084.2 FSI V8
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
AUDIA6 Sedan (C8)50 TDI V6
Unrestricted
260 km/h162 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 (4F/C6)Facelift 20084.2 FSI V86.1 s
AUDIA6 Sedan (C8)50 TDI V65.5 s

Although AUDI A6 (4F/C6) Facelift 2008 4.2 FSI V8 has more power, AUDI A6 Sedan (C8) 50 TDI V6 is quicker from 0-100 km/h.

The biggest 0-100 km/h difference is between AUDI A6 Sedan (C8) 50 TDI V6 and AUDI A6 (4F/C6) Facelift 2008 4.2 FSI V8: 0.6 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 (4F/C6)Facelift 20084.2 FSI V8
10.2 L/100 km
23.1 mpg US
27.7 mpg UK
AUDIA6 Sedan (C8)50 TDI V6
5.8 L/100 km
40.6 mpg US
48.7 mpg UK

The biggest fuel consumption difference is between AUDI A6 Sedan (C8) 50 TDI V6 and AUDI A6 (4F/C6) Facelift 2008 4.2 FSI V8: 4.4 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 (4F/C6)Facelift 20084.2 FSI V8
198 hp/t
147 kW/t
5.1 kg/hp
AUDIA6 Sedan (C8)50 TDI V6
157 hp/t
117 kW/t
6.4 kg/hp

Estimated range comparison

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

Chart data table
VehicleValue
AUDIA6 (4F/C6)Facelift 20084.2 FSI V8
784 km
487 mi
AUDIA6 Sedan (C8)50 TDI V6
1,086 km
675 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
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
AUDIA6 Sedan (C8)50 TDI V6
286 hp
213 kW
5.5 s
Unrestricted
260 km/h162 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 (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
AUDIA6 Sedan (C8)50 TDI V6
Power
286 hp
213 kW
0-100 km/h5.5 s
Top speed
Unrestricted
260 km/h162 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

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 (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
AUDIA6 Sedan (C8)50 TDI V6
Power
286 hp
213 kW
0-100 km/h5.5 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
5.8 L/100 km
40.6 mpg US
48.7 mpg UK

AUDI A6 Sedan (C8) 50 TDI 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 (4F/C6)Facelift 20084.2 FSI V8
10.2 L/100 km
23.1 mpg US
27.7 mpg UK
6.1 s
AUDIA6 Sedan (C8)50 TDI V6
5.8 L/100 km
40.6 mpg US
48.7 mpg UK
5.5 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 (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
AUDIA6 Sedan (C8)50 TDI V6
157 hp/t
117 kW/t
6.4 kg/hp
5.8 L/100 km
40.6 mpg US
48.7 mpg UK

Detailed score breakdown

Detailed score breakdown
VehicleAUDIA6 (4F/C6)Facelift 20084.2 FSI V8AUDIA6 Sedan (C8)50 TDI V6
Power
350 hp
261 kW
286 hp
213 kW
Torque
440 Nm
325 lb-ft
620 Nm
457 lb-ft
Acceleration
6.1 s
5.5 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Lightness
1,770 kg
3,902 lb
1,825 kg
4,023 lb
Fuel consumption
10.2 L/100 km
23.1 mpg US
27.7 mpg UK
5.8 L/100 km
40.6 mpg US
48.7 mpg UK
Practicality
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
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
Range score
784 km
487 mi
1,086 km
675 mi
CO2 score
244 g/km
150 g/km
Trunk score
546 L
19.3 cu ft
530 L
18.7 cu ft
Power-to-weight score
198 hp/t
147 kW/t
5.1 kg/hp
157 hp/t
117 kW/t
6.4 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 (4F/C6) Facelift 2008 4.2 FSI V8AUDI A6 Sedan (C8) 50 TDI V6
Consumption10.2 L/100 km23.1 mpg US27.7 mpg UK5.8 L/100 km40.6 mpg US48.7 mpg UK
Cost / 100 km17.85 LC100 km10.15 LC100 km
Cost / 100 mi28.73 LC100 mi16.33 LC100 mi
Annual fuel used1,530 L404 US gal337 UK gal870 L230 US gal191 UK gal
Annual fuel cost2,678 LC/year1,523 LC/year

Head-to-head comparisons

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

  • Has 64 hp more
  • Is 55 kg lighter
  • Has 5 km/h (3 mph) higher top speed
  • Has 41 hp/t better power-to-weight
  • Has 16 L more trunk volume

Pros

  • Highest top speed
  • Most powerful
  • Lightest
  • Best power-to-weight ratio
  • Largest trunk

Cons

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

AUDI A6 Sedan (C8) 50 TDI V6

  • Has 180 Nm more
  • Is 0.6 s quicker from 0-100 km/h
  • Uses 4.4 L/100 km less fuel
  • Has 302 km (188 mi) more estimated range
  • Emits 94 g/km less CO2

Pros

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

Cons

  • Lowest power
  • Heaviest
  • Lowest top speed
  • Smallest trunk

Choose cars to compare

Brand
Model
Generation
Engine or modification
AUDI A6 (4F/C6) 4.2 FSI V8
AUDI A6 Sedan (C8) 50 TDI V6
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2 vehicles selected

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