The GS 300h's 2.5-litre, four cylinder engine benefits from advanced technologies like the 'Atkinson Cycle', and Dual VVT-i intelligent valve timing.
| Drive | hybrid (HEV) |
| Power | 143kW |
| 0-100km/h | 9.0s |
| Battery | NiMH, kWh |
| Drive | hybrid (HEV) |
| Transmission | CVT |
Battery
| Type | NiMH |
| Voltage | 230 V |
| Capacity | n.d. |
Measurements
| Wheelbase | 2,855 cm |
| Length | 4,880 mm |
| Width | 1,840 mm |
| Height | 1,455 mm |
| Trunk size | n.d. |
| Weight | 1.830 kg |
| Maximum weight | 2.235 kg |
Capabilities and range
| Electric power | 143kW |
| Gasoline engine power | 133kW |
| Acceleration 0-100km/h | 9.0 s |
| Top speed | n.d. |
| Electric range | n.d. |
| Petrol/diesel range | n.d. |
EC consumption and emissions2
| EC electric consumption | n.d. |
| EC consumption petrol/diesel | 4.4 l/100km |
| CO2 emissions | 104 g/km |