How much horsepower does a S660 have?
The Honda S660 delivers about 85–87 horsepower (roughly 63–64 kW), depending on market and how power is rated. The engine is a compact 658cc turbocharged inline-3 designed for a light, high-revving driving experience.
Engine basics and horsepower figures
The figures for the S660's power vary by market due to different rating systems, but the core output is around the same peak torque and rpm. Below are the commonly cited numbers.
- Power output: 63 kW (85 PS) at 7,000 rpm (Japan/JDM rating).
- Alternative rating used in some markets: 64 kW (87 PS) at 7,000 rpm.
- Torque: 104 Nm at 2,600–5,500 rpm.
- Redline: about 7,000–7,500 rpm.
- Transmission: 6-speed manual (with a short-throw shifter).
These numbers highlight that the S660’s horsepower is modest on paper, but the car’s light weight and high-revving nature provide a lively, engaging driving experience.
Why numbers can differ by market
Horsepower labeling varies by region. In Japan, the S660’s output is often quoted in metric horsepower (PS) as 85 PS, which is roughly 84 hp, with torque measured in newton-meters. Some markets or promotional materials list 87 horsepower (about 64 kW). Conversions between PS and horsepower can introduce small differences, and testing standards (JIS, DIN, SAE) can also affect stated figures.
In practice, the car’s performance is driven more by its ultra-lightweight design—typically around 830–900 kg—and its high-revving engine than by raw horsepower alone.
Performance context and market status
Since its 2015 launch, the S660 has been celebrated for its mid-engine balance and open-top driving experience. Production ran primarily in Japan through the early 2020s, with limited global presence. Even with its modest horsepower, the S660 remains a benchmark for kei-roadster dynamics in its class.
Summary
The Honda S660’s horsepower sits in a narrow band around 85–87 PS (roughly 63–64 kW), depending on market and rating standards. In all markets, the car leverages a compact turbocharged 658cc engine, a light curb weight, and agile handling to deliver a spirited driving experience that emphasizes balance and rev-happiness over raw power.
