The Assist System of the Lexus GS are as follow:
| Variants | 2018 Lexus GS GS 300 F Sport | 2018 Lexus GS GS 300 Luxury | 2018 Lexus GS GS 300 Premium | 2018 Lexus GS GS 300h | 2018 Lexus GS GS 350 F Sport | 2018 Lexus GS GS 350 Luxury |
| Parking Sensor Front | Y | Y | Y | Y | Y | Y |
| Parking Sensor Rear | Y | Y | Y | Y | Y | Y |
| Parking Camera | with front and rear cameras | with front and rear cameras | with front and rear cameras | with front and rear cameras | with front and rear cameras | with front and rear cameras |
| Cruise Control | Y | Y | Y | Y | Y | Y |
| Auto Parking | - | - | - | - | - | - |
| Auto Start/Stop | Y | |||||
| Hill Start Assist | Y | Y | Y | Y | Y | Y |
