Yes, you can legally drive a Smart car on a motorway in the United States. Models like the Smart Fortwo are certified for highway use and can maintain the required speeds. However, the experience is significantly different from driving a conventional car due to the vehicle's small size, light weight, and relatively low horsepower.
The primary challenge is stability. Weighing around 1,800 pounds, the Fortwo is susceptible to being buffeted by crosswinds and the air turbulence, or bow wave, created by passing semi-trucks. This requires constant, small steering corrections to stay centered in your lane. While its top speed is adequate (around 90 mph), acceleration is modest. Merging into fast-moving traffic or climbing steep grades demands planning; you'll need a longer stretch of clear road to safely enter.
Safety is a common concern. The Smart car's Tridion safety cell is a rigid passenger compartment designed to withstand impacts. It comes standard with Electronic Stability Control (ESC), which is crucial for maintaining control. While its crash test ratings are acceptable, the physics of a collision with a much larger vehicle are unavoidable. Defensive driving is your best asset.
For a confident motorway drive, choose a day with calm weather, avoid the leftmost "fast lane," and maintain a safe following distance. Keep your maneuvers smooth and deliberate. The car is capable, but it demands more active involvement from the driver than a typical sedan or SUV.
| Consideration | Smart Fortwo (Typical Specs) | Typical Mid-Size Sedan (for comparison) |
|---|
| Horsepower | 89 hp | 190-250 hp |
| 0-60 mph Acceleration | ~10.5 seconds | ~7.0 seconds |
| Curb Weight | ~1,800 lbs | ~3,300 lbs |
| Wheelbase | 73.5 inches | 111-112 inches |
| Overall Length | 106.1 inches | 192-196 inches |
| NHTSA Overall Safety Rating | 4-Star | 5-Star (typical) |
