S5 Sedan vs I8 Roadster
Audi · BMW
1/4 Mile winner
I8 Roadster
Beats the S5 Sedan by 0.11s
The verdict
In a quarter-mile drag race, the I8 Roadster beats the S5 Sedan comfortably, finishing 0.11 seconds ahead. It's tight on paper, but our simulator gives the edge to the I8 Roadster thanks to a slightly better power-to-weight balance.
Spec head-to-head
Power
362 hp
369 hp
0–100 km/h
4.5s
4.4s
Top speed
250 km/h
250 km/h
Engine
3.0L Turbo V6 MHEV
ELECTRIC MOTOR
Fuel
Mild Hybrid
Hybrid
Torque
550 Nm
570 Nm
Price
$63,500
$165,000
Simulated race times
Distance
S5 Sedan
I8 Roadster
100 m
5.566s
5.511s
1/8 mile
8.251s
8.173s
1/4 mile
12.456s
12.348s
1 km
22.526s
22.372s
Acceleration curves
Who should buy which?
Price: S5 Sedan is $63,500 vs $165,000 for the I8 Roadster — a $101,500 gap.
FAQ
Which is faster, the S5 Sedan or the I8 Roadster?
In our simulated 1/4 mile drag race, the I8 Roadster is faster, beating the S5 Sedan by 0.11 seconds.
What is the 0–100 km/h time of the S5 Sedan vs the I8 Roadster?
The S5 Sedan hits 100 km/h in 4.5 seconds, while the I8 Roadster does it in 4.4 seconds.
How much horsepower does each car have?
The S5 Sedan produces 362 hp; the I8 Roadster produces 369 hp.
What are the top speeds?
The S5 Sedan tops out at 250 km/h, and the I8 Roadster reaches 250 km/h.
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