The data indicates that a significant majority of private sale prices for the Peugeot 407 (2004-11) 4-door saloon 2.0 HDI 136 SE fall below £1,000, accounting for approximately 78%. Conversely, around 22% of the vehicles are listed for between £1,000 and £2,000. This suggests that most of these models are likely valued at the lower end of the market, possibly reflecting factors such as age, mileage, or condition. There are no data points for sales above £2,000, implying that higher-value transactions are either rare or outside the typical private sale range for this vehicle.

The data indicates that all Peugeot 407 (2004-11) 4-door saloon 2.0 HDI 136 SE models are equipped with a 2.0-liter diesel engine, as 100% of the sampled vehicles have this engine capacity and fuel type. This consistency suggests that, within this model range, the 2.0-liter diesel engine is the standard specification, with no variations in engine size or alternative fuel types reported.