The Comparative Analysis :
BMW 420i Convertible (17 - 18) vs. Audi S4 Convertible (05 - 09)
€ 48,500
€ 64,600
€ 48,500
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 64,600
ⓘBase price of a new vehicle with standard equipment in Germany at market launch. Price Info
Vehicle Dimensions
The dimensions of these vehicles differ slightly. The BMW 420i Cabrio is 2.6 inches longer, 1.9 inches wider and 0.3 inches lower than the Audi S4 Convertible.
BMW 420i Cabrio
Audi S4 Convertible
54.5
71.9
79.4
54.8
70
76.1
71.9 in
Width
70 in
79.4 in
Width Incl. Mirrors
76.1 in
54.5 in
Height
54.8 in
110.6
182.6
104.3
180
182.6 in
Length
180 in
110.6 in
Wheelbase
104.3 in
Vehicle Weight
BMW 420i Cabrio
Audi S4 Convertible
3913 lb
Curb Weight
4255 lb
4784 lb
Gross Vehicle
Weight
Weight
5104 lb
Weight Difference:
342 lb
8.04 %
General
BMW 420i Cabrio
Audi S4 Convertible
F33
Generation
B7 (8E)
Convertible
Car Body Style
Convertible
Premium Unleaded
Fuel Type
Premium Unleaded
Rear-wheel drive
Drivetrain
Permanent all-wheel drive (AWD)
6-speed manual transmission
Transmission
6-speed manual transmission
Engine
BMW 420i Cabrio
Audi S4 Convertible
Straight-four gasoline engine with turbocharger
Engine Type
V8 gasoline engine (naturally aspirated engine)
BMW B48
Engine Series
B48-B20
Engine Code
BBK
4
Valves
5
4
Cylinders
8
2 L / 98 cu in
Displacement
4.2 L / 206 cu in
181 hp
at 5000 rpm
Power
339 hp
at 7000 rpm
BMW 420i Cabrio
181 hp
339 hp
Audi S4 Convertible
199 lb‑ft
at 1350 rpm
Max. Torque
302 lb‑ft
at 3500 rpm
BMW 420i Cabrio
199 lb‑ft
302 lb‑ft
Audi S4 Convertible
Performance
BMW 420i Cabrio
Audi S4 Convertible
143 mph
Maximum Speed
155 mph
8.2 sec
Acceleration 0 to 62 mph
5.9 sec
62 mph
62
mph
mph
374 ft
0.000 sec
BMW 420i Cabrio
62 mph
62
mph
mph
269 ft
0.000 sec
Audi S4 Convertible
▶ REPLAY
21.62 lb/hp
Weight-to-Power Ratio
12.55 lb/hp
BMW 420i Cabrio
21.62 lb/hp
12.55 lb/hp
Audi S4 Convertible
Fuel Economy / Emissions
BMW 420i Cabrio
Audi S4 Convertible
Fuel Economy
38 mpg
combined
17 mpg
BMW 420i Cabrio
38 mpg
17 mpg
Audi S4 Convertible
29 mpg
city
12 mpg
No data
highway
No data
15.9 gal
Fuel Tank Capacity
16.6 gal
601 mi
Range
284 mi
BMW 420i Cabrio
601 mi
284 mi
Audi S4 Convertible
Environmental Impact
117.5 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).
261.5 kWh
BMW 420i Cabrio
117.5 kWh
261.5 kWh
Audi S4 Convertible
Euro 6b (NEFZ)
Emission Standard
Euro 4
233 g/mi (NEFZ)
CO2 Emissions
533 g/mi (NEFZ)
Practical Convenience
BMW 420i Cabrio
Audi S4 Convertible
2
Doors
2
4
No. of Seats
4
871 lb
Maximum Payload
849 lb
10.5 cu ft
Trunk Volume
8.9 cu ft
No data
Cargo Volume (Seats Down)
No data
