| MODEL | BMW CONCEPT CLEVER AND SIMPLE 2009 |
| Year | 2009 |
| Engine Type | SIMPLE: 36 kW combustion engine (with electric motor); CLEVER: single cylinder, natural gas (CNG) |
| Displacement / Capacity | CLEVER: 230 cc / 14.0 cu in |
| Bore X Stroke | — |
| Compression Ratio | — |
| Cooling System | — |
| Max Power | SIMPLE: 36 kW / 48 hp; CLEVER: 12.5 kW / 17 hp |
| Max Torque | — |
| Ignition | — |
| Induction | — |
| Start System | — |
| TRANSMISSION SPECS | |
| Lubrication | — |
| Gear Box | CLEVER: CVT automatic |
| Clutch | — |
| Final Drive | — |
| CHASSIS SPECS | |
| Frame | — |
| Front Suspension | — |
| Rear Suspension | — |
| Front Brakes | — |
| Rear Brakes | — |
| DIMENSION SPECS | |
| Overall Length | CLEVER: approx. 3000 mm / 118 in |
| Overall Width | SIMPLE: 1100 mm / 43.3 in; CLEVER: approx. 1000 mm / 39.4 in |
| Overall Height | CLEVER: approx. 1400 mm / 55.1 in |
| Seat Height | — |
| Wheelbase | — |
| Ground Clearance | — |
| Dry Weight | — |
| Wet Weight | SIMPLE: approx. 450 kg / 992 lbs (kerb); CLEVER: under 400 kg / 882 lbs |
| WHEEL SPECS | |
| Front Tyre | — |
| Rear Tyre | — |
| FUEL SYSTEM | |
| Fuel Capacity | CLEVER: 2 x 1.7 kg CNG cylinders |
| Fuel Consumption | SIMPLE: approx. 2 L/100 km |
| Top Speed | CLEVER: approx. 100 km/h / 62 mph |
This entry covers two BMW research vehicles that sit between a car and a motorcycle, both put on display at the BMW Museum in Munich in October 2009. CLEVER is a narrow three-wheeler for two people seated in tandem, running a small natural-gas single and leaning into bends under computer control, built to show how low city-car emissions could go. SIMPLE is a lighter-looking enclosed tilting vehicle with a very slippery body that leans like a motorcycle and only uses hydraulics at walking pace or when stopped. Neither went into production; they were studies in low-energy urban mobility.
