| Attribute | Value |
| General |
| Production from | 2016 year |
| Make | Vespa |
| Model | Vespa GTS 300 |
| Category | Scooter |
| Engine and transmission |
| Engine type | Single cylinder, four-stroke |
| Valves per cylinder | 4 |
| Fuel system | Injection. Port injection |
| Engine details | Quasar engine |
| Displacement | 278 cm³ |
| Power | 15.4 kw |
| Max RPM | Add |
| Fuel consumption | 3.36 l/100km |
| Cooling system | Liquid |
| Transmission type,final drive | Belt |
| Torque | 22.3 Nm |
| Bore | 75 mm |
| Stroke | 63 mm |
| Gearbox | Automatic |
| Greenhouse gases | 78.0 CO2 g/km. (CO2 - Carbon dioxide emission) |
| Fuel control | Add |
| Emission details | Catalyzed. EPA and CARB |
| Driveline | Add |
| Ignition | CDI |
| Clutch | Automatic dry centrifugal clutch with vibration dampers |
| Lubrication system | Wet sump, chain-driven lobe pump |
| Compression | Add |
| Exhaust system | Add |
| Chassis |
| Front suspension | Single arm, dual chamber hydraulic shock absorber with coaxial spring |
| Rear suspension | Two dual effect shock absorbers with adjustable preload |
| Front brakes | Single disc. ABS. Hydraulic. |
| Rear brakes | Single disc. ABS. Hydraulic. |
| Diameter | 220 mm |
| Frame type | Load-bearing sheet steel chassis |
| Front tyre | 120/70-12 |
| Rear tyre | 130/70-12 |
| Seat | Add |
| Wheels | Add |
| Front wheel travel | Add |
| Rear wheel travel | Add |
| Trail | Add |
| Rake (fork angle) | Add |
| Other |
| Battery capacity | Add |
| Starter | Electric |
| Color options | |
| Carrying capacity | Add |
| Light | Add |
| Instruments | Add |
| Electrical Voltage | Add |
| Dimensions |
| Wheelbase | 1,369 mm |
| Kerb weight | Add |
| Dry weight | 158 kg |
| Power/weight ratio | 0.0975 |
| Overall height | Add |
| Overall length | 1,928 mm |
| Overall width | 754 mm |
| Seat height | 790 mm |
| Alternate seat height | Add |
| Ground clearance | Add |
| Front percentage of weight | Add |
| Rear percentage of weight | Add |
| Performance |
| Top speed | 128 km/h |
| Acceleration 0-100 km/h | Add |
| Length | Add |
| Reserve fuel capacity | Add |
| Fuel capacity | 9.08 l |
| Oil capacity | Add |
| Width | Add |
| Height | Add |