Car comparison

AUDI A6 Sedan (C8) 45 TDI V6vsCadillac CT6 II 28T

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

New comparison

AUDI A6 Sedan (C8)

45 TDI V6

245 hp2967 ccDieselAWDAutomaticTurbochargedSedan2020-2023
VS

Cadillac CT6 II

28T

237 hp1998 ccGasolineRWDAutomaticTurbochargedSedan2023-present

Comparison overview

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

Best choices

AUDI A6 Sedan (C8) 45 TDI V6

  • Quickest 0-100 km/h
    6.2 s
  • Fastest top speed
    260 km/h
    162 mph Unrestricted
    250 km/h
    155 mph Restricted
  • Most powerful
    245 hp
    183 kW
  • Highest torque
    500 Nm
    369 lb-ft
  • 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 overall score
    67/100
  • Best performance score
    62/100
  • Best economy score
    91/100
  • Best practicality score
    77/100

Specification comparison

Specification comparison
ModelAUDIA6 Sedan (C8)45 TDI V6CadillacCT6 II28T
Power
245hp183kW
237hp177kW
Torque
500Nm369lb-ft
350Nm258lb-ft
Curb weight
1,825kg4,023lb
1,760kg3,880lb
Gross weight
2,510kg5,534lb
-
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Calculated
Unrestricted
245 km/h152 mph
Restricted
230 km/h143 mph
Calculated
To 99% top speed
66.0s99% target: 257 km/h / 160 mph
Calculated
72.5s99% target: 243 km/h / 151 mph
Calculated
0-100 km/h
6.2s
7.5s
0-200 km/h
19.8s
Calculated
25.5s
Calculated
0-60 mph
5.9s
Calculated
7.2s
Calculated
Fuel consumption
6L/100 km39.2mpg US47.1mpg UK
7.7L/100 km30.5mpg US36.7mpg UK
Fuel consumption city
7.8L/100 km30.2mpg US36.2mpg UK
-
Fuel consumption highway
5L/100 km47mpg US56.5mpg UK
-
Quarter mile
14.2s
Calculated
15.3s
Calculated
Power-to-weight
134hp/t100kW/t61hp/1000 lb
Calculated
135hp/t100kW/t61hp/1000 lb
Calculated
Torque-to-weight
274Nm/t183lb-ft/ton
Calculated
199Nm/t133lb-ft/ton
Calculated
Estimated range
1,050km652mi
Calculated
935km581mi
Calculated
Displacement
2,967cc181cu in
1,998cc122cu in
Length
4,939mm194in
5,223mm206in
Width
1,866mm73in
1,890mm74in
Height
1,457mm57in
1,480mm58in
Wheelbase
2,924mm115in
3,109mm122in
Front track
1,630mm64in
1,631mm64in
Rear track
1,617mm64in
1,652mm65in
Trunk volume
530L
508L
Max trunk volume
995L
-
Doors
4
4
Seats
5
5
Fuel tank
63L
72L

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) 45 TDI V6Cadillac CT6 II 28TPowerTorque
  • AUDI A6 Sedan (C8) 45 TDI V6: Power / Torque
  • Cadillac CT6 II 28T: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
AUDIA6 Sedan (C8)45 TDI V63,500-4,750 rpm1,500-3,250 rpm5,000 rpm
CadillacCT6 II28T5,000 rpm1,500-4,000 rpm5,250 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricAUDIA6 Sedan (C8)45 TDI V6CadillacCT6 II28T
Acceleration checkpoints
0-60 mph
0-97 km/h
5.9 s
7.2 s
0-100 km/h
0-62 mph
6.2 s
7.5 s
0-200 km/h
0-124 mph
19.8 s
25.5 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Limited
Unrestricted
245 km/h152 mph
Restricted
230 km/h143 mph
Likely limited
Drag race simulation
60 ft
18 m
2.5 s
2.8 s
330 ft
101 m
6.4 s
7.0 s
1/8 mile
201 m
9.4 s
10.2 s
1000 ft
305 m
12.0 s
13.0 s
1/4 mile
402 m
14.2 s
15.3 s
Trap speed
1/4 mile
402 m
170 km/h
106 mph
158 km/h
98 mph

Power comparison

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

Chart data table
VehicleValue
AUDIA6 Sedan (C8)45 TDI V6
245 hp
183 kW
CadillacCT6 II28T
237 hp
177 kW

AUDI A6 Sedan (C8) 45 TDI V6 has 8 hp more than Cadillac CT6 II 28T.

The biggest power difference is between Cadillac CT6 II 28T and AUDI A6 Sedan (C8) 45 TDI V6: 8 hp (6 kW).

Torque comparison

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

Chart data table
VehicleValue
AUDIA6 Sedan (C8)45 TDI V6
500 Nm
369 lb-ft
CadillacCT6 II28T
350 Nm
258 lb-ft

Curb weight comparison

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

Chart data table
VehicleValue
AUDIA6 Sedan (C8)45 TDI V6
1,825 kg
4,023 lb
CadillacCT6 II28T
1,760 kg
3,880 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)45 TDI V6
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
CadillacCT6 II28T
Unrestricted
245 km/h152 mph
Restricted
230 km/h143 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)45 TDI V66.2 s
CadillacCT6 II28T7.5 s

The biggest 0-100 km/h difference is between AUDI A6 Sedan (C8) 45 TDI V6 and Cadillac CT6 II 28T: 1.3 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)45 TDI V6
6.0 L/100 km
39.2 mpg US
47.1 mpg UK
CadillacCT6 II28T
7.7 L/100 km
30.5 mpg US
36.7 mpg UK

The biggest fuel consumption difference is between AUDI A6 Sedan (C8) 45 TDI V6 and Cadillac CT6 II 28T: 1.7 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)45 TDI V6
134 hp/t
100 kW/t
7.4 kg/hp
CadillacCT6 II28T
135 hp/t
100 kW/t
7.4 kg/hp

Estimated range comparison

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

Chart data table
VehicleValue
AUDIA6 Sedan (C8)45 TDI V6
1,050 km
652 mi
CadillacCT6 II28T
935 km
581 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
AUDIA6 Sedan (C8)45 TDI V6
245 hp
183 kW
6.2 s
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
CadillacCT6 II28T
237 hp
177 kW
7.5 s
Unrestricted
245 km/h152 mph
Restricted
230 km/h143 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)45 TDI V6
Power
245 hp
183 kW
0-100 km/h6.2 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
CadillacCT6 II28T
Power
237 hp
177 kW
0-100 km/h7.5 s
Top speed
Unrestricted
245 km/h152 mph
Restricted
230 km/h143 mph
Doors/seats
4 doors
5 seats
Trunk
508 L
17.9 cu ft
Length
5,223 mm
205.6 in
Height
1,480 mm
58.3 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)45 TDI V6
Power
245 hp
183 kW
0-100 km/h6.2 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
6.0 L/100 km
39.2 mpg US
47.1 mpg UK
CadillacCT6 II28T
Power
237 hp
177 kW
0-100 km/h7.5 s
Top speed
Unrestricted
245 km/h152 mph
Restricted
230 km/h143 mph
7.7 L/100 km
30.5 mpg US
36.7 mpg UK

AUDI A6 Sedan (C8) 45 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 Sedan (C8)45 TDI V6
6.0 L/100 km
39.2 mpg US
47.1 mpg UK
6.2 s
CadillacCT6 II28T
7.7 L/100 km
30.5 mpg US
36.7 mpg UK
7.5 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 Sedan (C8)45 TDI V6
134 hp/t
100 kW/t
7.4 kg/hp
6.0 L/100 km
39.2 mpg US
47.1 mpg UK
CadillacCT6 II28T
135 hp/t
100 kW/t
7.4 kg/hp
7.7 L/100 km
30.5 mpg US
36.7 mpg UK

Detailed score breakdown

Detailed score breakdown
VehicleAUDIA6 Sedan (C8)45 TDI V6CadillacCT6 II28T
Power
245 hp
183 kW
237 hp
177 kW
Torque
500 Nm
369 lb-ft
350 Nm
258 lb-ft
Acceleration
6.2 s
7.5 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Unrestricted
245 km/h152 mph
Restricted
230 km/h143 mph
Lightness
1,825 kg
4,023 lb
1,760 kg
3,880 lb
Fuel consumption
6.0 L/100 km
39.2 mpg US
47.1 mpg UK
7.7 L/100 km
30.5 mpg US
36.7 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
508 L
17.9 cu ft
Length
5,223 mm
205.6 in
Height
1,480 mm
58.3 in
Range score
1,050 km
652 mi
935 km
581 mi
Trunk score
530 L
18.7 cu ft
508 L
17.9 cu ft
Power-to-weight score
134 hp/t
100 kW/t
7.4 kg/hp
135 hp/t
100 kW/t
7.4 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 Sedan (C8) 45 TDI V6Cadillac CT6 II 28T
Consumption6 L/100 km39.2 mpg US47.1 mpg UK7.7 L/100 km30.5 mpg US36.7 mpg UK
Cost / 100 km10.50 LC100 km13.48 LC100 km
Cost / 100 mi16.90 LC100 mi21.69 LC100 mi
Annual fuel used900 L238 US gal198 UK gal1,155 L305 US gal254 UK gal
Annual fuel cost1,575 LC/year2,021 LC/year

Head-to-head comparisons

AUDI A6 Sedan (C8) 45 TDI V6

  • Has 8 hp more
  • Has 150 Nm more
  • Is 1.3 s quicker from 0-100 km/h
  • Has 15 km/h (9 mph) higher top speed
  • Uses 1.7 L/100 km less fuel
  • Has 115 km (71 mi) more estimated range
  • Has 22 L more trunk volume

Pros

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

Cons

  • Heaviest

Cadillac CT6 II 28T

  • Is 65 kg lighter
  • Has 0 hp/t better power-to-weight

Pros

  • Lightest
  • Best power-to-weight ratio

Cons

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

Choose cars to compare

Brand
Model
Generation
Engine or modification
AUDI A6 Sedan (C8) 45 TDI V6
Cadillac CT6 II 28T
Compare selected cars
2 vehicles selected

Popular comparisons

45 TDI V6
45 TDI V6
VS
AUDIA6 Sedan (C8)45 TDI V6vsAUDIA6 Sedan (C8)Facelift 202345 TDI V6
28T
28T
VS
CadillacCT6 II28TvsCadillacXTSFacelift 201728T
45 TDI V6
45 TDI V6
VS
AUDIA6 Sedan (C8)45 TDI V6vsAUDIA6 Avant (C8)45 TDI V6
28T
EQE 300 98 kWh
VS
CadillacCT6 II28TvsMercedes-BenzEQE (V295)EQE 300 98 kWh
45 TDI V6
45 TDI V6
VS
AUDIA6 Sedan (C8)45 TDI V6vsAUDIA6 allroad (C8)45 TDI V6
28T
2.0i
VS
CadillacCT6 II28TvsJaguarXF (X260)Facelift 20202.0i
45 TDI V6
2.7 V6
VS
AUDIA6 Sedan (C8)45 TDI V6vsAUDIA6 (4B/C5)Facelift 20012.7 V6
28T
380TSI
VS
CadillacCT6 II28TvsVolkswagenMagotan (B9)380TSI
45 TDI V6
2.7 T V6
VS
AUDIA6 Sedan (C8)45 TDI V6vsAUDIA6 (4B/C5)2.7 T V6
28T
530i
VS
CadillacCT6 II28TvsBMW5 Series Sedan (G60)530i
45 TDI V6
3.2 FSI V6
VS
AUDIA6 Sedan (C8)45 TDI V6vsAUDIA6 (4F/C6)3.2 FSI V6
45 TDI V6
45 TDI V6
VS
AUDIA6 Sedan (C8)45 TDI V6vsAUDIA6 Avant (C8)Facelift 202345 TDI V6
AUDI A6 Sedan (C8) 45 TDI V6 vs Cadillac CT6 II 28T - car comparison - FastVsFaster