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Ford Focus 1.0 Ecoboost in the driving report: 1.0-liter three-cylinder

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Ford Focus 1.0 Ecoboost in the driving report
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V on the outside he looks in mustard-olive-yellow metallic painted Ford Focus 1.0 Ecoboost like any other, even a cursory glance under the bonnet hardly notices that there is no four-cylinder installed here - as is usual in the Focus. The word “Ecoboost” is emblazoned on the black plastic lid, but the Ford designation for supercharged gasoline engines with direct injection reveals only half the story. Because this engine is content with just one liter of displacement from just three cylinders - this has never been seen before in the compact class.

What sounds like joyless renunciation turns out to be a disguised muscleman when looking at the data sheet the highest liter output of all Ford series models. Sooner or later, the Ford Focus 1.0 Ecoboost will replace the previous, free-suction four-cylinder with 1.6 liter displacement. With the same output (125 hp), the three-cylinder shows superior torque: 170 Nm are available from 1,400 rpm, and even 200 Nm are available for a short time via overboost.

Ford Focus 1.0 Ecoboost is anything but tired

The petrol engine can hardly be heard when idling, and as long as it is in the partial load range, the occupants hardly notice the typical three-cylinder growling. The engine looks anything but tired. Thanks to variable camshaft adjustment and a fast-responding turbine, it delivers enough torque even at low speeds for lazy shifting acceleration in the upper stages of the easily and precisely shiftable six-speed transmission. If, on the other hand, the accelerator presses on the floor pan in second gear, the Ford Focus 1.0 Ecoboost starts to sprint, with the long-stroke four-valve engine cheering happily towards the limiter and, despite good insulation, tickling the ears with a throaty roar.

Okay, the almost sporty sound of the Ford Focus 1.0 Ecoboost may take some getting used to, but you can hardly blame the one-liter turbo for a lack of smoothness. Targeted imbalances on the flywheel and crankshaft damper take away the three-cylinder's tendency to shake. The usual balancer shaft was too heavy and too friction-intensive for the developers.

Only five liters of standard consumption

In any case, it presents itself the extremely compact engine optimized down to the last detail. For example, the engine block and cylinder head have a separate one for a short warm-up phaseCooling circuit. The exhaust manifold, which is cast together with the head, is also water-cooled - the full-load enrichment that is often used to protect the turbocharger components can be omitted. Ancillary units that support needs as well as recuperation and start-stop technology help to save. This reduces the standard consumption compared to the four-cylinder, which is only 200 euros cheaper, by just under one to 5.0 L /100 km. A second 100-hp variant of the three-cylinder engine equipped with a five-speed gearbox is content with 4.8 liters, which corresponds to CO2 emissions of 109 g /km. The Ford Focus 1.0 Ecoboost doesn’t even beat this petrol best value in the compact class with a diesel under the hood.


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