| MODEL | LAMBRETTA LD 150 SERIES 1 1957 |
| Year | 1957 |
| 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 | — |
| Cooling System | Air |
| Max Power | 4.4 kW / 6.0 hp @ 4750 rpm |
| Max Torque | — |
| Ignition | Contact breaker and points |
| Induction | Carburettor (Dellorto) |
| Start System | — |
| TRANSMISSION SPECS | |
| Lubrication | — |
| Gear Box | 3-speed |
| Clutch | 3 speed, hand changed |
| Final Drive | — |
| CHASSIS SPECS | |
| Frame | Tubular steel |
| Front Suspension | — |
| Rear Suspension | — |
| Front Brakes | Expanding drum brake |
| Rear Brakes | Expanding drum brake |
| DIMENSION SPECS | |
| Overall Length | — |
| Overall Width | — |
| Overall Height | — |
| Seat Height | — |
| Wheelbase | — |
| Ground Clearance | — |
| Dry Weight | 88 kg / 194 lbs |
| Wet Weight | — |
| WHEEL SPECS | |
| Front Tyre | — |
| Rear Tyre | — |
| FUEL SYSTEM | |
| Fuel Capacity | — |
| Fuel Consumption | — |
| Top Speed | 78.9 km/h / 49 mph |
The LD 150 Series 1 is the earliest of the LD scooters in this list, with a 148 cc air-cooled two-stroke engine and a three-speed hand-operated gearbox. It is a light, simple scooter with a modest top speed.
