The Interior of the BMW 3 Series are as follow:
| Variants | 2020 BMW 3 Series 320i Sport | 2019 BMW 3 Series 330i M Sport | 2019 BMW 3 Series 330e M Sport | 2019 BMW 3 Series 318i Luxury |
| Sunroof | No | - | Yes | - |
| Sunshade | No | - | Powered rear sun shade | - |
| Seat Features(Front-Driver) | Electric | Power Adjustable Seats with Memory Function | Power Adjustable Seats with Memory Function | Power Adjustable Seats with Memory Function |
| Seat Features(Passenger) | Power Adjustable | |||
| Seat Features(Rear) | 40:20:40 Split-Folding | 40:20:40 Split-Folding | Fold-down Centre Armrest | Fold-down Centre Armrest |
| Cupholders | 2 Front, 2 Rear | 2 Front, 2 Rear | 2 Front, 2 Rear | 2 Front, 2 Rear |
| Front Air-con | 3-zone control | Dual-zone Automatic Climate Control System | Dual-zone Automatic Climate Control System | Dual-zone Automatic Climate Control System |
| Rear Air-con | Y | Y | Y | Y |
| Paddle Shift | Y | Y | Y | - |
| Multi-function Steering Wheel | Y | Y | Y | |
| Steering Tilt | Y | Y | Y | Y |
| Steering Telescopic | Y | Y | Y | Y |
| Steering Adjustment Electric | N | |||
| Engine Start | Keyless Push Button | Keyless Push Button | Keyless Push Button | Keyless Push Button |
| Head-up Display | N | - | Y | - |
