How fast can a S660 go?
In factory trim, the S660 tops out around 225–235 km/h (roughly 140 mph), with 0–100 km/h accelerations typically in the mid-to-high six-second range. Real-world figures vary based on version, tires, and conditions.
Speed and Power: The Numbers Behind the S660
Understanding the speed of the S660 starts with its core specifications, which balance a small engine with very light weight to deliver brisk performance for a kei-class roadster.
- Engine: 658–660 cc turbocharged inline-3 delivering about 85–87 horsepower (roughly 63–65 kW) and around 104 Nm of torque.
- Transmission: 6-speed manual, contributing to engaging, high-revving driving dynamics.
- Weight: curb weight around 830 kg (about 1,830 lb), yielding an excellent power-to-weight ratio for its class.
- Top speed: factory figures typically around 225–235 km/h (130–146 mph), depending on gearing, tires, and aerodynamics.
- 0–100 km/h: generally about 6.6–7.0 seconds in standard configurations.
In sum, the S660 is designed to maximize nimble handling and acceleration rather than raw drag-strip numbers, making it feel faster than its horsepower alone would suggest.
Real-World Performance and Variants
Actual performance can vary based on market, tire choice, and vehicle condition. Here are typical real-world figures and caveats owners and testers note.
- 0–100 km/h times commonly reported in the 6.7–7.2 second range, depending on tire setup and environmental conditions.
- Observed top speeds in controlled tests generally cluster around 217–235 km/h, with higher readings possible on well-tuned examples or with certain tires.
- Most production S660s shipped with a 6-speed manual and tuning aimed at agile handling rather than ultimate straight-line speed.
Notes: The S660 was originally a Japan-only kei sports car, with limited international availability. Some markets saw private imports or niche variants (including Mugen-tuned versions) that offered minor performance tweaks, but numbers can vary by year and spec.
How the Speed Is Realized: Engine and Weight
Speed in the S660 arises from pairing a compact turbo engine with a featherweight chassis, supported by a driver-focused gearbox and tuned suspension.
- A 658–660 cc inline-3 turbo engine producing about 85–87 horsepower and around 104 Nm of torque.
- A curb weight near 830 kg, aiding quick acceleration and responsive handling.
- A 6-speed manual transmission to keep the engine in its high-rev range for spirited driving.
- Light aerodynamic drag relative to its size, helping sustain higher speeds with the available power.
Conclusion: For enthusiasts, the S660 delivers a compelling balance of speed, handling, and lightweight character that makes it feel notably quicker on twisty roads than its modest horsepower would imply.
Availability and Market Notes
Understanding speed figures also depends on market availability and model lineage, as the S660’s production and export history shape what you might drive today.
- Originally offered primarily for the Japanese kei-car market, with limited export outside Japan.
- Special variants and tuners (including Mugen packages) offered performance tweaks, but official specs mostly align with the standard figures cited above.
Summary
The Honda S660 delivers brisk, engaging performance for a kei-class roadster: a factory top speed around 225–235 km/h (about 140 mph) and 0–100 km/h times in the mid-to-high six-second range. Real-world results vary with tires, weather, and market specifications, but its light weight and turbocharged engine make for a lively, agile driving experience rather than a straight-line speed machine.
Can you tune a Honda S660?
Honda S660 Tuning Solutions
More power or more economy? With the TDI Tuning App you can decide directly from your driver's seat. Instantly change the performance of your engine and adapt your vehicle to suit any situation.
How fast is the 2015 Honda S660?
134km/h
This replacement for the Honda Beat uses an improved version of the same three-cylinder engine, with just 660cc. It's not big on power, or big on anything, but it is huge amounts of fun, like a smile on wheels. Hit 134km/h in the S660 and it just sits there, electronically governed from going any faster.
What is the top speed of the S660?
The top speed of the Honda S660 is limited to approximately 140 km/h (about 87 mph). This is a result of its 660cc engine, which is regulated by Japanese kei car standards to produce a maximum of around 64 horsepower.
- Top speed: 140140140 km/h (878787 mph).
- Engine: A turbocharged $660$cc three-cylinder engine.
- Horsepower: Approximately 646464 hp.
- Purpose: The speed limitation is due to Japanese kei car regulations.
Is the Honda S660 legal in the US?
No, the Honda S660 is not street-legal in the U.S. because it was never officially imported or sold there, and it does not meet U.S. safety and emissions standards. The car was designed exclusively for the Japanese market as a "kei car," meaning it adheres to specific Japanese regulations for size and engine displacement that are different from those in the U.S.
- Market: Honda stated the S660 was too small for the U.S. market and was developed for markets like Japan, India, or China.
- Safety Standards: The vehicle was not designed to meet U.S. federal safety standards, which would require significant and costly modifications for it to be legal.
- Emissions: The engine also does not meet U.S. emissions requirements.
- Availability: The only way to legally have one in the U.S. would be through a special import via an Independent Commercial Importer (ICI) who can modify and certify the vehicle, which is not a standard process for the S660.
