| MODEL | VESPA 150 COSA 1988 - 98 |
| Year | 1988 - 98 |
| Engine Type | Two stroke, single cylinder |
| Displacement / Capacity | 150 cc / 9.2 cu in |
| Bore X Stroke | 57.8 x 57 mm |
| Compression Ratio | 9.2:1 |
| Cooling System | Air cooled, centrifugal fan |
| Max Power | 6.25 kW / 8.5 hp @ 5700 rpm |
| Max Torque | 12.75 Nm / 9.4 lb-ft @ 4500 rpm |
| Ignition | Electronic |
| Induction | Dell'Orto SHBC 20/20L carburettor |
| Start System | Kick start (Elestart: electric) |
| TRANSMISSION SPECS | |
| Lubrication | Premix 1:50 |
| Gear Box | 4 speed, grip-shift, constant mesh |
| Clutch | Wet, multiplate |
| Final Drive | Direct drive |
| CHASSIS SPECS | |
| Frame | Pressed sheet steel, streamlined monocoque structure |
| Front Suspension | — |
| Rear Suspension | — |
| Front Brakes | 150 mm drum |
| Rear Brakes | 150 mm drum |
| DIMENSION SPECS | |
| Overall Length | — |
| Overall Width | — |
| Overall Height | — |
| Seat Height | — |
| Wheelbase | — |
| Ground Clearance | — |
| Dry Weight | 85 kg / 187 lbs |
| Wet Weight | — |
| WHEEL SPECS | |
| Front Tyre | 3.0 x 10 in |
| Rear Tyre | 3.0 x 10 in |
| FUEL SYSTEM | |
| Fuel Capacity | 7.7 Litres / 2 US gal |
| Fuel Consumption | 2.1 L/100 km / 111 US mpg |
| Top Speed | 95 km/h / 59 mph |
The Cosa was Piaggio's late-1980s rework of the classic steel Vespa, with a more modern body and an electronic-ignition 150 cc two-stroke. It was sold in plain and Elestart (electric start) forms and carried the Vespa monocoque and grip-shift gearbox into the 1990s.
