06 Jan 04
Basically, the engine's brain can tell when an extra boost of torque might be useful. So if you find yourself trying to accelerate up a steep hill, the engine management can momentarily provide an extra shot of torque between 1750 and 3200rpm. It's not continuous, though, and if sensors detect any problems such as overheating, the engine's torque will be dropped back to its normal state. From the driver's point of view, all of this engine management trickery is achieved seamlessly - it's virtually impossible to tell whether the engine is in overboost mode. The HDi feels swift in its own right - no need to use the 'for a diesel' qualifier here. It is, though, a pretty vocal performer when you push on a bit. You'll not forget you're behind the wheel of a diesel.
Peugeot also offers a new six-speed manual gearbox, which makes a fine match with the HDi powerplant. The ML6C gearbox has a positive, smooth and direct action, with sensible ratios for strong response in the lower gears and relaxed cruising in top. And as a bonus, the new gearbox's more compact design has increased the amount of steering lock that can be applied.
The new engine also scores very well in those two crucial measures of diesel engine strengths. First, the 2.0-litre HDi is Euro IV compliant - it produces a low 142g/km of CO2 emissions. And it'll return 52.3mpg combined fuel economy, with 62.8mpg achievable on the open road.
Strong performance, outstanding fuel economy and a cleaner exhaust should be more than enough to put the 307 2.0 HDi on anybody's diesel shopping list. Entertaining handling and a fine ride quality are bonuses here, too. And with an even more advanced particulate filter, you don't even have to suffer the tell-tale smoke trails that follow most diesels around.
