| MODEL | LAMBRETTA LI 150 SERIES 1 1958 |
| Year | 1958 |
| Engine Type | Single cylinder, two-stroke |
| Displacement / Capacity | 148 cc / 9.03 cu in |
| Bore X Stroke | 57 x 58 mm / 2.2 x 2.3 in |
| Compression Ratio | 7.0:1 |
| Cooling System | Air |
| Max Power | 4.7 kW / 6.5 hp @ 5300 rpm |
| Max Torque | — |
| Ignition | — |
| Induction | Dell'Orto carburettor |
| Start System | Kick |
| TRANSMISSION SPECS | |
| Lubrication | — |
| Gear Box | — |
| Clutch | — |
| Final Drive | — |
| CHASSIS SPECS | |
| Frame | — |
| Front Suspension | — |
| Rear Suspension | — |
| Front Brakes | Expanding drum brake |
| Rear Brakes | Expanding drum brake |
| DIMENSION SPECS | |
| Overall Length | 1825 mm / 71.9 in |
| Overall Width | 710 mm / 28 in |
| Overall Height | 1038 mm / 40.9 in |
| Seat Height | — |
| Wheelbase | 1290 mm / 50.8 in |
| Ground Clearance | — |
| Dry Weight | 105 kg / 231.5 lb |
| Wet Weight | — |
| WHEEL SPECS | |
| Front Tyre | 3.50-10 |
| Rear Tyre | 3.50-10 |
| FUEL SYSTEM | |
| Fuel Capacity | 7.19 Litres / 1.90 US gal |
| Fuel Consumption | — |
| Top Speed | 80.5 km/h / 50 mph |
The first-series LI 150 was the 150 cc Lambretta of the late 1950s, a two-stroke scooter with two separate seats and drum brakes. It was the modest, economical member of the Lambretta range, with a Dell'Orto carburettor and kick starting.
