| Attribute | Lambretta GP 150 × | Lambretta LI 150 Series 1 1959 × |
|---|---|---|
| General | ||
| Production from (year) | 1969 | 1959 |
| Make | Lambretta | Lambretta |
| Model | Lambretta GP 150 | Lambretta LI 150 Series 1 |
| Category | Scooter | Scooter |
| Engine and transmission | ||
| Engine type | Single cylinder, two-stroke | Single cylinder, two-stroke |
| Fuel system | Carburettor. DellÓrto | Carburettor. DellÓrto |
| Displacement (cm³) | 148 | 148 |
| Power (kw) | 6.4 | 4.7 |
| Cooling system | Air | Air |
| Transmission type,final drive | Chain | - |
| Bore (mm) | 57 | 57 |
| Stroke (mm) | 58 | 58 |
| Compression | 7.8:1 | 7.0:1 |
| Chassis | ||
| Front brakes | Expanding brake (drum brake) | Expanding brake (drum brake) |
| Rear brakes | Expanding brake (drum brake) | Expanding brake (drum brake) |
| Front tyre | 3.50-10 | 3.50-10 |
| Rear tyre | 3.50-10 | 3.50-10 |
| Seat | Dual | Two single seats |
| Wheels | Spoked | Spoked |
| Other | ||
| Starter | Kick | Kick |
| Dimensions | ||
| Wheelbase (mm) | 1,290 | 1,290 |
| Dry weight (kg) | 117 | 105 |
| Power/weight ratio | 0.0543 | 0.0448 |
| Overall height (mm) | 1,011 | 1,038 |
| Overall length (mm) | 1,798 | 1,825 |
| Overall width (mm) | 681 | 710 |
| Performance | ||
| Top speed (km/h) | 101 | 80 |
| Fuel capacity (l) | 6.74 | 7.19 |