The Comparative Analysis :
Audi A6 45 TFSI quattro S tronic (18 - ..) vs. Audi S6 TDI tiptronic (19 - ..)
€ 54,200

€ 76,500

€ 54,200
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 76,500
ⓘBase price of a new vehicle with standard equipment in Germany at market launch. Price Info
Vehicle Dimensions
Тhere is barely any difference in dimensions between the two vehicles. Both cars are the same width, but the A6 45 TFSI is 0.8 inches shorter and 0.4 inches taller.
A6 45 TFSI
S6 TDI
57.4
74.3
83.1
56.9
74.3
83.1
74.3 in
Width
74.3 in
83.1 in
Width Incl. Mirrors
83.1 in
57.4 in
Height
56.9 in
115.1
194.2
115.3
195
194.2 in
Length
195 in
115.1 in
Wheelbase
115.3 in
Vehicle Weight
A6 45 TFSI
S6 TDI
3902 lb
Curb Weight
4475 lb
5093 lb
Gross Vehicle
Weight
Weight
5710 lb

Weight Difference:
573 lb
12.8 %

General
A6 45 TFSI
S6 TDI
C8 (4K)
Generation
C8 (4K)
Sedan
Car Body Style
Sedan
Mid-Grade Unleaded
Fuel Type
Diesel

Permanent all-wheel drive (AWD)
Drivetrain
Permanent all-wheel drive (AWD)

7-speed dual clutch transmission
Transmission
8-speed automatic transmission
Engine
A6 45 TFSI
S6 TDI
Straight-four gasoline engine with turbocharger
Engine Type
6-cylinder mild hybrid diesel engine with turbocharger and electric driven compressor
DKNA, DLHA
Engine Code
4
Valves
4
4
Cylinders
6
2 L / 98 cu in
Displacement
3 L / 147 cu in
242 hp
at 5000 rpm
Power
344 hp
at 3850 rpm
A6 45 TFSI
242 hp
344 hp
S6 TDI
273 lb‑ft
at 1600 rpm
Max. Torque
516 lb‑ft
at 2500 rpm
A6 45 TFSI
273 lb‑ft
516 lb‑ft
S6 TDI
Performance
A6 45 TFSI
S6 TDI
155 mph
Maximum Speed
155 mph
6 sec
Acceleration 0 to 62 mph
5 sec
62 mph
62
mph
mph
272 ft
0.000 sec

A6 45 TFSI
62 mph
62
mph
mph
226 ft
0.000 sec

S6 TDI
▶ REPLAY
16.12 lb/hp
Weight-to-Power Ratio
13.01 lb/hp
A6 45 TFSI
16.12 lb/hp
13.01 lb/hp
S6 TDI
Fuel Economy / Emissions
A6 45 TFSI
S6 TDI
Fuel Economy
36 mpg
combined
38 mpg
A6 45 TFSI
36 mpg
38 mpg
S6 TDI
28 mpg
city
32 mpg
No data
highway
No data
16.6 gal
Fuel Tank Capacity
19.3 gal
593 mi
Range
731 mi
A6 45 TFSI
593 mi
731 mi
S6 TDI
Environmental Impact
125 kWh
Total Energy Consumption
per 100 miles ⓘThe total energy consumption per 100 miles is the amount of energy consumed by a vehicle when burning fuel or using electricity per 100 miles (final energy), and the energy required to produce the appropriate amount of fuel or electricity (primary energy).
per 100 miles ⓘThe total energy consumption per 100 miles is the amount of energy consumed by a vehicle when burning fuel or using electricity per 100 miles (final energy), and the energy required to produce the appropriate amount of fuel or electricity (primary energy).
127.6 kWh
A6 45 TFSI
125 kWh
127.6 kWh
S6 TDI
Euro 6d-TEMP-EVAP (WLTP)
Emission Standard
Euro 6d-TEMP-EVAP-ISC (WLTP)
293 g/mi (WLTP)
CO2 Emissions
327 g/mi (WLTP)
Practical Convenience
A6 45 TFSI
S6 TDI
4
Doors
4
4
No. of Seats
5
1190 lb
Maximum Payload
1235 lb
15 cu ft
Trunk Volume
15 cu ft












No data
Cargo Volume (Seats Down)
No data