The 2.5-liter Rover KV6 25K4N engine was produced in England and Korea from 1996 to 2006 and installed on models 75, 825, as well as Land Rover Freelander and Kia Carnival under the K5 index. At the end of its release in Britain, it was assembled in China for another ten years, where it was called NV6.
Engines of KV6-series: 20K4N, 25K4N.
Specifications
| Production years | 1996-2006 |
| Displacement, cc | 2497 |
| Fuel system | distributed injection |
| Power output, hp | 150 – 190 |
| Torque output, Nm | 220 – 245 |
| Cylinder block | aluminum V6 |
| Block head | aluminum 24v |
| Cylinder bore, mm | 80 |
| Piston stroke, mm | 82.8 |
| Compression ratio | 10.5 |
| Features | VIS |
| Hydraulic lifters | yes |
| Timing drive | belt |
| Phase regulator | no |
| Turbocharging | no |
| Recommended engine oil | 5W-30 |
| Engine oil capacity, liter | 5.2 |
| Fuel type | petrol |
| Euro standards | EURO 2/3 |
| Fuel consumption, L/100 km (for Rover 75 2000) — city — highway — combined |
16.9 8.6 11.6 |
| Engine lifespan, km | ~250 000 |
| Weight, kg | 179.5 |
The engine was installed on:
- Rover 75 I (RJ) in 1998 – 2005;
- Rover 800 I (XS) in 1996 – 1999;
- MG ZT in 2001 – 2005;
- Land Rover Freelander 1 (L314) in 2000 – 2006;
- Kia Carnival 1 (GQ) in 1998 – 2005;
- Kia Sedona GQ in 2001 – 2005.
Disadvantages of the Rover 25K4N engine
- This is an engine with wet liners, which, if overheated, can simply sag;
- When the liners sag, the antifreeze gets into the oil and an expensive overhaul awaits you;
- Here is a complex timing of three belts and when replacing it, it is easy to damage the camshafts;
- Also, the dampers in the intake manifold are often wedged and the engine power drops sharply;
- The weak points of the motor include the pump, thermostat, cooling fan.
