Car comparison

AUDI A6 (4B/C5) · Facelift 2001 2.7 V6vsAUDI A6 Sedan (C8) · Facelift 2023 40 TDI

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

New comparison

AUDI A6 (4B/C5) · Facelift 2001

2.7 V6

250 hp2671 ccGasolineAWDManualTwin-turboSedan2001-2004
VS

AUDI A6 Sedan (C8) · Facelift 2023

40 TDI

204 hp1968 ccDieselFWDAutomaticTurbochargedSedan2023-2025

Comparison overview

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

Best choices

AUDI A6 (4B/C5) Facelift 2001 2.7 V6

  • Quickest 0-100 km/h
    6.8 s
  • Fastest top speed
    248 km/h
    154 mph
  • Most powerful
    250 hp
    186 kW
  • Best power-to-weight
    151 hp/t
    112 kW/t
    6.6 kg/hp
  • Best overall score
    63/100
  • Best performance score
    56/100
  • Best practicality score
    78/100

AUDI A6 Sedan (C8) Facelift 2023 40 TDI

  • Highest torque
    400 Nm
    295 lb-ft
  • Lightest
    1,640 kg
    3,616 lb
  • Lowest combined fuel consumption
    6.0 L/100 km
    39.2 mpg US
    47.1 mpg UK
  • Best estimated range
    1,050 km
    652 mi
  • Largest trunk
    530 L
  • Best economy score
    91/100

Specification comparison

Specification comparison
ModelAUDIA6 (4B/C5)Facelift 20012.7 V6AUDIA6 Sedan (C8)Facelift 202340 TDI
Power
250hp186kW
204hp152kW
Torque
350Nm258lb-ft
400Nm295lb-ft
Curb weight
1,660kg3,660lb
1,640kg3,616lb
Gross weight
2,210kg4,872lb
2,255kg4,971lb
Top speed
248 km/h
154 mph
246 km/h
153 mph
To 99% top speed
68.7s99% target: 246 km/h / 153 mph
Calculated
78.4s99% target: 244 km/h / 151 mph
Calculated
0-100 km/h
6.8s
7.9s
0-200 km/h
23.1s
Calculated
27.0s
Calculated
0-60 mph
6.5s
Calculated
7.5s
Calculated
Fuel consumption
11.6L/100 km20.3mpg US24.4mpg UK
6L/100 km39.2mpg US47.1mpg UK
Fuel consumption city
16.6L/100 km14.2mpg US17.0mpg UK
-
Fuel consumption highway
8.8L/100 km26.7mpg US32.1mpg UK
-
Quarter mile
14.7s
Calculated
15.7s
Calculated
Power-to-weight
151hp/t112kW/t68hp/1000 lb
Calculated
124hp/t93kW/t56hp/1000 lb
Calculated
Torque-to-weight
211Nm/t141lb-ft/ton
Calculated
244Nm/t163lb-ft/ton
Calculated
Estimated range
603km375mi
Calculated
1,050km652mi
Calculated
Displacement
2,671cc163cu in
1,968cc120cu in
Length
4,796mm189in
4,939mm194in
Width
1,810mm71in
1,886mm74in
Height
1,453mm57in
1,457mm57in
Wheelbase
2,759mm109in
2,924mm115in
Front track
1,540mm61in
1,630mm64in
Rear track
1,569mm62in
1,617mm64in
Trunk volume-
530L
Max trunk volume
434L
995L
Doors
4
4
Seats
5
5
Fuel tank
70L
63L
CO2 emissions
278g/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 (4B/C5) Facelift 2001 2.7 V6AUDI A6 Sedan (C8) Facelift 2023 40 TDIPowerTorque
  • AUDI A6 (4B/C5) Facelift 2001 2.7 V6: Power / Torque
  • AUDI A6 Sedan (C8) Facelift 2023 40 TDI: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
AUDIA6 (4B/C5)Facelift 20012.7 V65,800 rpm1,800-4,500 rpm6,050 rpm
AUDIA6 Sedan (C8)Facelift 202340 TDI3,800-4,200 rpm1,750-3,250 rpm4,450 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricAUDIA6 (4B/C5)Facelift 20012.7 V6AUDIA6 Sedan (C8)Facelift 202340 TDI
Acceleration checkpoints
0-60 mph
0-97 km/h
6.5 s
7.5 s
0-100 km/h
0-62 mph
6.8 s
7.9 s
0-200 km/h
0-124 mph
23.1 s
27.0 s
Top speed
248 km/h
154 mph
246 km/h
153 mph
Drag race simulation
60 ft
18 m
2.6 s
2.8 s
330 ft
101 m
6.6 s
7.1 s
1/8 mile
201 m
9.8 s
10.5 s
1000 ft
305 m
12.5 s
13.3 s
1/4 mile
402 m
14.7 s
15.7 s
Trap speed
1/4 mile
402 m
163 km/h
101 mph
155 km/h
97 mph

Power comparison

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

Chart data table
VehicleValue
AUDIA6 (4B/C5)Facelift 20012.7 V6
250 hp
186 kW
AUDIA6 Sedan (C8)Facelift 202340 TDI
204 hp
152 kW

AUDI A6 (4B/C5) Facelift 2001 2.7 V6 has 46 hp more than AUDI A6 Sedan (C8) Facelift 2023 40 TDI.

The biggest power difference is between AUDI A6 Sedan (C8) Facelift 2023 40 TDI and AUDI A6 (4B/C5) Facelift 2001 2.7 V6: 46 hp (34 kW).

Torque comparison

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

Chart data table
VehicleValue
AUDIA6 (4B/C5)Facelift 20012.7 V6
350 Nm
258 lb-ft
AUDIA6 Sedan (C8)Facelift 202340 TDI
400 Nm
295 lb-ft

Curb weight comparison

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

Chart data table
VehicleValue
AUDIA6 (4B/C5)Facelift 20012.7 V6
1,660 kg
3,660 lb
AUDIA6 Sedan (C8)Facelift 202340 TDI
1,640 kg
3,616 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 (4B/C5)Facelift 20012.7 V6
248 km/h
154 mph
AUDIA6 Sedan (C8)Facelift 202340 TDI
246 km/h
153 mph

0-100 km/h comparison

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

Chart data table
VehicleValue
AUDIA6 (4B/C5)Facelift 20012.7 V66.8 s
AUDIA6 Sedan (C8)Facelift 202340 TDI7.9 s

The biggest 0-100 km/h difference is between AUDI A6 (4B/C5) Facelift 2001 2.7 V6 and AUDI A6 Sedan (C8) Facelift 2023 40 TDI: 1.1 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 (4B/C5)Facelift 20012.7 V6
11.6 L/100 km
20.3 mpg US
24.4 mpg UK
AUDIA6 Sedan (C8)Facelift 202340 TDI
6.0 L/100 km
39.2 mpg US
47.1 mpg UK

The biggest fuel consumption difference is between AUDI A6 Sedan (C8) Facelift 2023 40 TDI and AUDI A6 (4B/C5) Facelift 2001 2.7 V6: 5.6 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 (4B/C5)Facelift 20012.7 V6
151 hp/t
112 kW/t
6.6 kg/hp
AUDIA6 Sedan (C8)Facelift 202340 TDI
124 hp/t
93 kW/t
8.0 kg/hp

Estimated range comparison

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

Chart data table
VehicleValue
AUDIA6 (4B/C5)Facelift 20012.7 V6
603 km
375 mi
AUDIA6 Sedan (C8)Facelift 202340 TDI
1,050 km
652 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
AUDIA6 (4B/C5)Facelift 20012.7 V6
250 hp
186 kW
6.8 s
248 km/h
154 mph
AUDIA6 Sedan (C8)Facelift 202340 TDI
204 hp
152 kW
7.9 s
246 km/h
153 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 (4B/C5)Facelift 20012.7 V6
Power
250 hp
186 kW
0-100 km/h6.8 s
Top speed
248 km/h
154 mph
Doors/seats
4 doors
5 seats
Trunk
434 L
15.3 cu ft
Length
4,796 mm
188.8 in
Height
1,453 mm
57.2 in
AUDIA6 Sedan (C8)Facelift 202340 TDI
Power
204 hp
152 kW
0-100 km/h7.9 s
Top speed
246 km/h
153 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 (4B/C5)Facelift 20012.7 V6
Power
250 hp
186 kW
0-100 km/h6.8 s
Top speed
248 km/h
154 mph
11.6 L/100 km
20.3 mpg US
24.4 mpg UK
AUDIA6 Sedan (C8)Facelift 202340 TDI
Power
204 hp
152 kW
0-100 km/h7.9 s
Top speed
246 km/h
153 mph
6.0 L/100 km
39.2 mpg US
47.1 mpg UK

AUDI A6 Sedan (C8) Facelift 2023 40 TDI 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 (4B/C5)Facelift 20012.7 V6
11.6 L/100 km
20.3 mpg US
24.4 mpg UK
6.8 s
AUDIA6 Sedan (C8)Facelift 202340 TDI
6.0 L/100 km
39.2 mpg US
47.1 mpg UK
7.9 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 (4B/C5)Facelift 20012.7 V6
151 hp/t
112 kW/t
6.6 kg/hp
11.6 L/100 km
20.3 mpg US
24.4 mpg UK
AUDIA6 Sedan (C8)Facelift 202340 TDI
124 hp/t
93 kW/t
8.0 kg/hp
6.0 L/100 km
39.2 mpg US
47.1 mpg UK

Detailed score breakdown

Detailed score breakdown
VehicleAUDIA6 (4B/C5)Facelift 20012.7 V6AUDIA6 Sedan (C8)Facelift 202340 TDI
Power
250 hp
186 kW
204 hp
152 kW
Torque
350 Nm
258 lb-ft
400 Nm
295 lb-ft
Acceleration
6.8 s
7.9 s
Top speed
248 km/h
154 mph
246 km/h
153 mph
Lightness
1,660 kg
3,660 lb
1,640 kg
3,616 lb
Fuel consumption
11.6 L/100 km
20.3 mpg US
24.4 mpg UK
6.0 L/100 km
39.2 mpg US
47.1 mpg UK
Practicality
Doors/seats
4 doors
5 seats
Trunk
434 L
15.3 cu ft
Length
4,796 mm
188.8 in
Height
1,453 mm
57.2 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
603 km
375 mi
1,050 km
652 mi
CO2 score
278 g/km
-
Trunk score
434 L
15.3 cu ft
530 L
18.7 cu ft
Power-to-weight score
151 hp/t
112 kW/t
6.6 kg/hp
124 hp/t
93 kW/t
8.0 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 (4B/C5) Facelift 2001 2.7 V6AUDI A6 Sedan (C8) Facelift 2023 40 TDI
Consumption11.6 L/100 km20.3 mpg US24.4 mpg UK6 L/100 km39.2 mpg US47.1 mpg UK
Cost / 100 km20.30 LC100 km10.50 LC100 km
Cost / 100 mi32.67 LC100 mi16.90 LC100 mi
Annual fuel used1,740 L460 US gal383 UK gal900 L238 US gal198 UK gal
Annual fuel cost3,045 LC/year1,575 LC/year

Head-to-head comparisons

AUDI A6 (4B/C5) Facelift 2001 2.7 V6

  • Has 46 hp more
  • Is 1.1 s quicker from 0-100 km/h
  • Has 2 km/h (1 mph) higher top speed
  • Has 26 hp/t better power-to-weight

Pros

  • Quickest 0-100 km/h in this comparison
  • Highest top speed
  • Most powerful
  • Best power-to-weight ratio

Cons

  • Highest combined fuel consumption
  • Heaviest
  • Smallest trunk

AUDI A6 Sedan (C8) Facelift 2023 40 TDI

  • Has 50 Nm more
  • Is 20 kg lighter
  • Uses 5.6 L/100 km less fuel
  • Has 447 km (277 mi) more estimated range
  • Has 96 L more trunk volume

Pros

  • Highest torque
  • Lightest
  • Lowest combined fuel consumption
  • Best estimated range
  • Largest trunk

Cons

  • Slowest 0-100 km/h
  • Lowest power
  • Lowest top speed

Choose cars to compare

Brand
Model
Generation
Engine or modification
AUDI A6 (4B/C5) 2.7 V6
AUDI A6 Sedan (C8) 40 TDI
Compare selected cars
2 vehicles selected

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AUDI A6 (4B/C5) · Facelift 2001 2.7 V6 vs AUDI A6 Sedan (C8) · Facelift 2023 40 TDI - car comparison - FastVsFaster