The new flagship in the Nissan Micra range is the 1.0-litre DIG-T 117 PS turbocharged petrol engine, linked to a more performance-oriented six-speed manual transmission.

It is not simply a retuned and more powerful version of the IG-T 100 PS unit, but a completely different engine. It has been developed by the Renault-Nissan-Mitsubishi Alliance in conjunction with Daimler, alongside the 1.3-litre petrol engine recently launched in the Nissan Qashqai crossover SUV.

Still with only three-cylinders, the DIG-T 117 PS engine is engineered to offer customers a more performance-oriented drive, with 180 Nm of torque plus an additional 20 Nm on the overboost.

Comparing the two new engines – the 100 PS and the 117 PS – the latter has noticeably more acceleration which is prolonged further through the rev range. There is obviously more power, but also more torque and with maximum output lower in the rev range (180 Nm at 1,750 rpm on the 117 PS, vs. 160 Nm at 2,750 rpm on the 100 PS). The result is a 0-100 km/h time of 9.9 seconds for the 117 PS, which is a full second faster than the 100 PS manual (10.9 seconds).

However, it's not only the powertrain which is different: the Micra 117 PS delivers a more dynamic on-road performance thanks to a number of physical changes.
Versions featuring this engine have a lower ride height (-10mm), plus revised suspension tuning to optimise the benefits of that reduction. They also have sharper steering; the steering rack is quicker and lighter to use, so the car is noticeably more agile and fun to drive.

A new chrome exhaust finisher and 17-inch alloy wheels (Acenta grade and above) are the finishing touches to versions of the Micra featuring this powertrain.

The new DIG-T 117 PS features a number of technical innovations which allow it to deliver a spirited performance while maintaining high fuel economy and low CO2 emissions. These include:

Delta Cylinder Head: a world first technology in a 1.0-litre petrol engine, this innovation creates a more compact and lightweight engine. The benefits of this are an increase in available impact protection space and greater freedom in the design of the car's bonnet.

Bore spray coating on the cylinders: as with the 100 PS engine, this is a world-first technology in a 1.0-litre petrol engine. Developed from the Nissan GT-R supercar, bore spray coating has already been integrated into other Renault-Nissan-Mitsubishi powertrains, including the 1.3-litre petrol engine recently launched in the Nissan Qashqai crossover. Reducing the friction in the cylinder, the coating improves heat management and combustion, cuts weight and improves fuel economy and CO2 emissions.

Central Injector: in common with the 1.3-litre petrol engine recently launched on the Nissan Qashqai, this new Micra engine features an injector mounted centrally in the combustion chamber. Creating a more targeted fuel spray pattern, it prevents fuel from reaching the valves and spark plug resulting a better emissions performance. Fuel is supplied by a high pressure pump operating at 250 bar.

Turbocharger with electronically controlled waste gate: this technology provides improved control of the turbocharger, maximising engine response and efficiency.

Electric turbo actuators: these provide a rapid and precise response from the turbo, improving power delivery.

Intake and exhaust variable valve timing: optimised control maximises performance and reduces emissions.

Gasoline particulate filter (GPF): a mandatory feature for all direct injection gasoline engines, the GPF ensures particulates making their way through the exhaust are in line with emissions regulations.



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