The towing capacity shown below include the braked and unbraked towing capacity. Unbraked is when the trailer being towed does not have its own braking system. Braked is when the trailer being towed has its own braking system. The braked 2017 BMW 420I towing capacity is between 695 kg (0.695 tonnes) and 1600 kg (1.6 tonnes).
| Variant | Unbraked Capacity | Braked Capacity |
|---|---|---|
| Gran Coupe Luxury Line F36 MY16.5 Automatic | 695kg | 1400kg |
| Gran Coupe Luxury Line F36 MY16.5 Manual | 695kg | 1400kg |
| Gran Coupe Sport Line F36 MY16.5 Manual | 695kg | 1400kg |
| Gran Coupe Sport Line F36 MY16.5 Automatic | 695kg | 1400kg |
| Gran Coupe F36 MY17 Automatic | 695kg | 1400kg |
| Gran Coupe F36 MY17 Manual | 695kg | 1400kg |
| Luxury Edition Gran Coupe F36 MY17 Manual | 695kg | 1400kg |
| Luxury Edition Gran Coupe F36 MY17 Automatic | 695kg | 1400kg |
| Luxury Line F32 MY16.5 Manual | 745kg | 1600kg |
| Luxury Line F32 MY16.5 Automatic | 745kg | 1600kg |
| Sport Line F32 MY16.5 Automatic | 745kg | 1600kg |
| Sport Line F32 MY16.5 Manual | 745kg | 1600kg |
| Luxury Line F32 MY17 Automatic | 745kg | 1600kg |
| Luxury Line F32 MY17 Manual | 745kg | 1600kg |
| M Sport F32 MY17 Manual | 745kg | 1600kg |
| M Sport F32 MY17 Automatic | 745kg | 1600kg |
| Luxury Edition F32 MY17 Automatic | 745kg | 1600kg |
| Luxury Edition F32 MY17 Manual | 745kg | 1600kg |
| Variant | From Max Torque | From Max Power |
|---|---|---|
| Gran Coupe Luxury Line F36 MY16.5 Manual | 270nm @ 1250rpm | 135kw @ 5000rpm |
| Gran Coupe Sport Line F36 MY16.5 Automatic | 270nm @ 1250rpm | 135kw @ 5000rpm |
| Luxury Line F32 MY16.5 Automatic | 270nm @ 1250rpm | 135kw @ 5000rpm |
| Sport Line F32 MY16.5 Manual | 270nm @ 1250rpm | 135kw @ 5000rpm |
| Luxury Line F32 MY17 Automatic | 270nm @ 1250rpm | 135kw @ 5000rpm |
| Gran Coupe F36 MY17 Manual | 270nm @ 1250rpm | 135kw @ 5000rpm |
| M Sport F32 MY17 Automatic | 270nm @ 1250rpm | 135kw @ 5000rpm |
| Luxury Edition Gran Coupe F36 MY17 Automatic | 270nm @ 1250rpm | 135kw @ 5000rpm |
| Luxury Edition F32 MY17 Manual | 270nm @ 1250rpm | 135kw @ 5000rpm |
| Variant | Unbraked Capacity | Braked Capacity |
|---|---|---|
| Luxury Line F33 MY16.5 Automatic | 695kg | 1400kg |
| Luxury Line F33 MY16.5 Manual | 695kg | 1400kg |
| Sport Line F33 MY16.5 Manual | 695kg | 1400kg |
| Sport Line F33 MY16.5 Automatic | 695kg | 1400kg |
| Luxury Line F33 MY17 Automatic | 695kg | 1400kg |
| M Sport F33 MY17 Manual | 695kg | 1400kg |
| M Sport F33 MY17 Automatic | 695kg | 1400kg |
| Luxury Line F33 MY17 Manual | 745kg | 1600kg |
| Variant | From Max Torque | From Max Power |
|---|---|---|
| Luxury Line F33 MY16.5 Manual | 270nm @ 1250rpm | 135kw @ 5000rpm |
| Sport Line F33 MY16.5 Automatic | 270nm @ 1250rpm | 135kw @ 5000rpm |
| Luxury Line F33 MY17 Automatic | 270nm @ 1250rpm | 135kw @ 5000rpm |
| M Sport F33 MY17 Automatic | 270nm @ 1250rpm | 135kw @ 5000rpm |
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