Question: what is the difference between a discovery 3 and 4?
Answer: The Land Rover Discovery 4 is essentially a facelifted and vastly improved Discovery 3. ... This 245bhp twin-turbo 3.0-litre TDV6 eventually replaced the entry-level 2.7-litre diesel, which was available in the previous Discovery and, despite being larger, offers better fuel consumption and lower emissions.