A key factor that ensures efficient optimisation is the major engine recalibration carried out on the 1.6-litre HDi FAP unit to obtain a significant reduction of emissions. Achieving 129g/km of CO2 has been obtained without any change to gear ratios, so performance levels and acceleration remain unaffected.
Another supplementary contribution to the HDi 110 engine's fuel efficient behaviour is the adoption of electro-hydraulic power steering. The power steering is controlled by a hydraulic electro-pump unit in which assistance varies according to the speed of the car, the speed of rotation of the steering and the temperature of the steering fluid.
This steering system, already in place on other models in the 407 range (except six cylinder models), optimises fuel consumption compared to traditional hydraulic steering powered by the engine. In addition, due to the permanent adaptation of the force to be supplied, it offers the driver maximum steering accuracy as well as better feedback, while at the same time facilitating manoeuvres at low speed. Finally, the latest 407 is now equipped with new Michelin Energy Saver 205/60 R16 H tyres which significantly reduce rolling friction through advanced tyre construction.
Prices for the 407 Saloon start with the 'S' trim 2.0-litre Bioflex petrol at £17,745. The1.6-litre HDi 110 (129g/km) is an additional £1,000 at £18,745. The business 'SR' model with Peugeot Connect Navigation, 16 inch alloy wheels and Bluetooth hands-free telephone is £1,000 above the 'S'. The higher specification 'Sport' model features half-leather upholstery, front and rear parking aid, automatic folding mirrors, automatic windscreen wipers, and automatic headlamps on. Dual zone climate control air conditioning and 18 inch alloy wheels, with the HDi 110 engine is available at £20,745.