What is it?
This is the cleanest, greenest model in Citroën’s new C4 range: the e-HDi.
The micro-hybrid e-HDi powertrain incorporates a clever stop-start system that’s driven by the alternator. This reduces the need for a beefed-up starter motor so restarts are smoother and quicker.
Throw in all the usual eco-model add-ons, including regenerative braking and low-rolling-resistance tyres, and you have a C4 rated at 67.3mpg combined (15 per cent better than a standard 1.6 HDi) and 109g/km of CO2.
What’s it like?
In practice, the stop-start system is fast and discreet in its operation to the point where, after a while, you don’t even notice it’s there. Even with the usually slow-witted six-speed automated manual ’box, progress off the line is smooth.
The gearbox is a mismatch when it’s paired with the 154bhp 1.6 THP petrol engine, but it is far better suited to the less urgent, steadier character of the 110bhp 1.6 HDi unit. The speed of gearchanges still frustrates, but they are smoother and faster and help put you in the eco-driving mindset.
Should I buy one?
If you’re sold on the looks and ownership proposition of the new C4, you may well regard this model as the pick of the range. Citroën clearly hopes so.
It expects this version to be the best-selling C4 in the UK, accounting for more than one third of sales.
The smooth, efficient e-HDi powertrain is a match for the rest of the car’s characteristics: it never excites but it goes about its business in a sedate way. If fuel-efficiency and low CO2 are also factors in your decision, then it will hold appeal.
Citroen C4 e-HDI 110
Price: £19,700; Top speed: 118mph; 0-62mph: 11.2sec; Economy: 67.3mpg; CO2: 109g/km; Kerbweight: 1290kg; Engine: 1560cc, 4cyls, turbodiesel; Power: 110bhp at 3600rpm; Torque: 199lb ft at 2000rpm; Gearbox: 6-spd automated manual
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