Car comparison

AUDI Q8 (4M) 45 TDIvsAUDI Q6 45 TFSI

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

New comparison

AUDI Q8 (4M)

45 TDI

231 hp2967 ccDieselAWDAutomaticTurbochargedSUV2020-2023
VS

AUDI Q6

45 TFSI

265 hp1984 ccGasolineAWDAutomaticTurbochargedSUV2022-present

Comparison overview

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

Best choices

AUDI Q8 (4M) 45 TDI

  • Quickest 0-100 km/h
    7.1 s
  • Fastest top speed
    226 km/h
    140 mph
  • Highest torque
    500 Nm
    369 lb-ft
  • Lightest
    2,160 kg
    4,762 lb
  • Lowest combined fuel consumption
    7.2 L/100 km
    32.7 mpg US
    39.2 mpg UK
  • Best estimated range
    1,042 km
    647 mi
  • Largest trunk
    605 L
  • Best overall score
    65/100
  • Best performance score
    53/100
  • Best economy score
    87/100
  • Best practicality score
    89/100

AUDI Q6 45 TFSI

  • Most powerful
    265 hp
    198 kW
  • Best power-to-weight
    116 hp/t
    87 kW/t
    8.6 kg/hp

Specification comparison

Specification comparison
ModelAUDIQ8 (4M)45 TDIAUDIQ645 TFSI
Power
231hp172kW
265hp198kW
Torque
500Nm369lb-ft
400Nm295lb-ft
Curb weight
2,160kg4,762lb
2,280kg5,027lb
Gross weight
2,890kg6,371lb
2,780kg6,129lb
Top speed
226 km/h
140 mph
Unrestricted
215 km/h134 mph
Restricted
207 km/h129 mph
Calculated
To 99% top speed
95.2s99% target: 224 km/h / 139 mph
Calculated
90.8s99% target: 213 km/h / 132 mph
Calculated
0-100 km/h
7.1s
7.6s
0-200 km/h
36.8s
Calculated
46.0s
Calculated
0-60 mph
6.7s
Calculated
7.2s
Calculated
Fuel consumption
7.2L/100 km32.7mpg US39.2mpg UK
9.3L/100 km25.4mpg US30.5mpg UK
Fuel consumption city
8.8L/100 km26.7mpg US32.1mpg UK
-
Fuel consumption highway
6.3L/100 km37.3mpg US44.8mpg UK
-
Quarter mile
15.1s
Calculated
15.5s
Calculated
Power-to-weight
107hp/t80kW/t49hp/1000 lb
Calculated
116hp/t87kW/t53hp/1000 lb
Calculated
Torque-to-weight
231Nm/t155lb-ft/ton
Calculated
175Nm/t117lb-ft/ton
Calculated
Estimated range
1,042km647mi
Calculated
756km470mi
Calculated
Displacement
2,967cc181cu in
1,984cc121cu in
Length
4,986mm196in
5,099mm201in
Width
1,995mm79in
2,014mm79in
Height
1,705mm67in
1,784mm70in
Wheelbase
2,995mm118in
2,980mm117in
Front track
1,679mm66in
1,704mm67in
Rear track
1,691mm67in
1,721mm68in
Trunk volume
605L
286L
Max trunk volume
1,755L
2,398L
Doors
5
5
Seats
5
6
Fuel tank
75L
70L

Performance charts

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

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricAUDIQ8 (4M)45 TDIAUDIQ645 TFSI
Acceleration checkpoints
0-60 mph
0-97 km/h
6.7 s
7.2 s
0-100 km/h
0-62 mph
7.1 s
7.6 s
0-200 km/h
0-124 mph
36.8 s
46.0 s
Top speed
226 km/h
140 mph
Unrestricted
215 km/h134 mph
Restricted
207 km/h129 mph
Likely limited
Drag race simulation
60 ft
18 m
2.3 s
2.4 s
330 ft
101 m
6.4 s
6.6 s
1/8 mile
201 m
9.8 s
10.0 s
1000 ft
305 m
12.7 s
13.0 s
1/4 mile
402 m
15.1 s
15.5 s
Trap speed
1/4 mile
402 m
148 km/h
92 mph
144 km/h
90 mph

Power comparison

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

Chart data table
VehicleValue
AUDIQ8 (4M)45 TDI
231 hp
172 kW
AUDIQ645 TFSI
265 hp
198 kW

AUDI Q6 45 TFSI has 34 hp more than AUDI Q8 (4M) 45 TDI.

The biggest power difference is between AUDI Q8 (4M) 45 TDI and AUDI Q6 45 TFSI: 34 hp (25 kW).

Torque comparison

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

Chart data table
VehicleValue
AUDIQ8 (4M)45 TDI
500 Nm
369 lb-ft
AUDIQ645 TFSI
400 Nm
295 lb-ft

Curb weight comparison

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

Chart data table
VehicleValue
AUDIQ8 (4M)45 TDI
2,160 kg
4,762 lb
AUDIQ645 TFSI
2,280 kg
5,027 lb

Top speed without limiter comparison

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

Chart data table
VehicleValue
AUDIQ8 (4M)45 TDI
226 km/h
140 mph
AUDIQ645 TFSI
Unrestricted
215 km/h134 mph
Restricted
207 km/h129 mph

0-100 km/h comparison

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

Chart data table
VehicleValue
AUDIQ8 (4M)45 TDI7.1 s
AUDIQ645 TFSI7.6 s

Although AUDI Q6 45 TFSI has more power, AUDI Q8 (4M) 45 TDI is quicker from 0-100 km/h.

The biggest 0-100 km/h difference is between AUDI Q8 (4M) 45 TDI and AUDI Q6 45 TFSI: 0.5 s.

Fuel consumption comparison

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

Chart data table
VehicleValue
AUDIQ8 (4M)45 TDI
7.2 L/100 km
32.7 mpg US
39.2 mpg UK
AUDIQ645 TFSI
9.3 L/100 km
25.4 mpg US
30.5 mpg UK

The biggest fuel consumption difference is between AUDI Q8 (4M) 45 TDI and AUDI Q6 45 TFSI: 2.1 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
AUDIQ8 (4M)45 TDI
107 hp/t
80 kW/t
9.4 kg/hp
AUDIQ645 TFSI
116 hp/t
87 kW/t
8.6 kg/hp

Estimated range comparison

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

Chart data table
VehicleValue
AUDIQ8 (4M)45 TDI
1,042 km
647 mi
AUDIQ645 TFSI
756 km
470 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
AUDIQ8 (4M)45 TDI
231 hp
172 kW
7.1 s
226 km/h
140 mph
AUDIQ645 TFSI
265 hp
198 kW
7.6 s
Unrestricted
215 km/h134 mph
Restricted
207 km/h129 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
AUDIQ8 (4M)45 TDI
Power
231 hp
172 kW
0-100 km/h7.1 s
Top speed
226 km/h
140 mph
Doors/seats
5 doors
5 seats
Trunk
605 L
21.4 cu ft
Length
4,986 mm
196.3 in
Height
1,705 mm
67.1 in
AUDIQ645 TFSI
Power
265 hp
198 kW
0-100 km/h7.6 s
Top speed
Unrestricted
215 km/h134 mph
Restricted
207 km/h129 mph
Doors/seats
5 doors
6 seats
Trunk
286 L
10.1 cu ft
Length
5,099 mm
200.7 in
Height
1,784 mm
70.2 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
AUDIQ8 (4M)45 TDI
Power
231 hp
172 kW
0-100 km/h7.1 s
Top speed
226 km/h
140 mph
7.2 L/100 km
32.7 mpg US
39.2 mpg UK
AUDIQ645 TFSI
Power
265 hp
198 kW
0-100 km/h7.6 s
Top speed
Unrestricted
215 km/h134 mph
Restricted
207 km/h129 mph
9.3 L/100 km
25.4 mpg US
30.5 mpg UK

AUDI Q8 (4M) 45 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
AUDIQ8 (4M)45 TDI
7.2 L/100 km
32.7 mpg US
39.2 mpg UK
7.1 s
AUDIQ645 TFSI
9.3 L/100 km
25.4 mpg US
30.5 mpg UK
7.6 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
AUDIQ8 (4M)45 TDI
107 hp/t
80 kW/t
9.4 kg/hp
7.2 L/100 km
32.7 mpg US
39.2 mpg UK
AUDIQ645 TFSI
116 hp/t
87 kW/t
8.6 kg/hp
9.3 L/100 km
25.4 mpg US
30.5 mpg UK

Detailed score breakdown

Detailed score breakdown
VehicleAUDIQ8 (4M)45 TDIAUDIQ645 TFSI
Power
231 hp
172 kW
265 hp
198 kW
Torque
500 Nm
369 lb-ft
400 Nm
295 lb-ft
Acceleration
7.1 s
7.6 s
Top speed
226 km/h
140 mph
Unrestricted
215 km/h134 mph
Restricted
207 km/h129 mph
Lightness
2,160 kg
4,762 lb
2,280 kg
5,027 lb
Fuel consumption
7.2 L/100 km
32.7 mpg US
39.2 mpg UK
9.3 L/100 km
25.4 mpg US
30.5 mpg UK
Practicality
Doors/seats
5 doors
5 seats
Trunk
605 L
21.4 cu ft
Length
4,986 mm
196.3 in
Height
1,705 mm
67.1 in
Doors/seats
5 doors
6 seats
Trunk
286 L
10.1 cu ft
Length
5,099 mm
200.7 in
Height
1,784 mm
70.2 in
Range score
1,042 km
647 mi
756 km
470 mi
Trunk score
605 L
21.4 cu ft
286 L
10.1 cu ft
Power-to-weight score
107 hp/t
80 kW/t
9.4 kg/hp
116 hp/t
87 kW/t
8.6 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 Q8 (4M) 45 TDIAUDI Q6 45 TFSI
Consumption7.2 L/100 km32.7 mpg US39.2 mpg UK9.3 L/100 km25.4 mpg US30.5 mpg UK
Cost / 100 km12.60 LC100 km16.21 LC100 km
Cost / 100 mi20.28 LC100 mi26.08 LC100 mi
Annual fuel used1,080 L285 US gal238 UK gal1,389 L367 US gal306 UK gal
Annual fuel cost1,890 LC/year2,431 LC/year

Head-to-head comparisons

AUDI Q8 (4M) 45 TDI

  • Has 100 Nm more
  • Is 120 kg lighter
  • Is 0.5 s quicker from 0-100 km/h
  • Has 11 km/h (7 mph) higher top speed
  • Uses 2.1 L/100 km less fuel
  • Has 286 km (178 mi) more estimated range
  • Has 319 L more trunk volume

Pros

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

Cons

  • Lowest power

AUDI Q6 45 TFSI

  • Has 34 hp more
  • Has 9 hp/t better power-to-weight

Pros

  • Most powerful
  • Best power-to-weight ratio

Cons

  • Slowest 0-100 km/h
  • Highest combined fuel consumption
  • Heaviest
  • Lowest top speed
  • Smallest trunk

Choose cars to compare

Brand
Model
Generation
Engine or modification
AUDI Q8 (4M) 45 TDI
AUDI Q6 45 TFSI
Compare selected cars
2 vehicles selected

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