Only the 75 model and comparable sedans and wagons made under the MG brand were equipped with the 1.8-liter turbo Rover 18K4G or Rover 75 1.8 turbo engine, which was manufactured between 2002 and 2005. There is only one version of this power unit, which has a 150 horsepower and 215 Nm capacity.

K-series engines include the 11K4F, 14K2F, 14K4F, 16K4F, 18K4F, 18K4K, and 18K4G.
Specifications
| Production years | 2002-2005 |
| Displacement, cc | 1796 |
| Fuel system | distributed injection |
| Power output, hp | 150 |
| Torque output, Nm | 215 |
| Cylinder block | aluminum R4 |
| Block head | aluminum 16v |
| Cylinder bore, mm | 80 |
| Piston stroke, mm | 89.3 |
| Compression ratio | 9.2 |
| Features | DOHC |
| Hydraulic lifters | yes |
| Timing drive | belt |
| Phase regulator | no |
| Turbocharging | Garrett GT2052LS |
| Recommended engine oil | 5W-30 |
| Engine oil capacity, liter | 4.5 |
| Fuel type | petrol |
| Euro standards | EURO 3 |
| Fuel consumption, L/100 km (for Rover 75 2005) — city — highway — combined |
11.3 6.1 8.0 |
| Engine lifespan, km | ~220 000 |
| Weight, kg | 112 |
The engine was installed on:
- Rover 75 I (RJ) in 2002 – 2005;
- MG ZT in 2003 – 2005.
Disadvantages of the Rover 18K4G engine
This power unit frequently breaks through the gasket because it is terrified of overheating;
The cylinder head frequently leads and occasionally completely cracks when it overheats excessively;
Oil leaks frequently occur from the camshaft seals and under the valve cover; the unit supports, ignition coils, and turbine are distinguished by a low resource; the valves will bend if the belt breaks at 100,000 kilometers.
