New Chevrolet Cruze review, test drive

With 164bhp on tap (a substantial 11 percent more than the oldengine), the new Cruze is by far the most powerful car in its class. Torque has been upped to 38.7kgm. The main focus of the engine tweaks was to improve driveability, refinement and fuel efficiency. We tested both the manual and automatic versions of the Cruze to find out just how much of an overall improvement this engine is.

A turn of the key establishes that this new common-rail diesel engine is significantly more refined than the previous one, be it at idle or when you’re revving hard.

Its newfound refinement (and power) comes from a host of improvements to the engine’s guts. The updates include an engine block that has been strengthened to take the extra power and torque, and a completely redesigned cylinder head to incorporate a chain-driven DOHC valve-train as against the rubber-belt-driven one on the previous car. The air intake, which used to sit far from the inletmanifold, has now been moved closer to improve airflow and help reduce turbo lag. The common-rail system has also been upgradedand runs at a much higher 1800bar (against 1600bar in the old car)with seven injections per power stroke compared to five on the old motor. Chevrolet has alsoemployed a dual-mass flywheel to reduce engine vibrations.

While all these changes have substantially bumped up power and torque, it’s real-world driving that paints the true picture. For starters, the new Cruze feels slower than the older one! You don’t get that violent kick like before; instead there’s a progressive build-up of power, and it’s this far more linear power delivery that masks the feeling of speed in the new car. Our data acquisition equipmentreveals that the new car is actually quicker in most areas. In the 20-80kph third-gear slog, the new Cruze pips the old model by a half a second, while in the 40-100kph run in fourth gear, it’s quicker by a substantial one and a half seconds. It’s only in flat-out acceleration that that the old Cruze is still quicker. The new model does the dash to 100kph in 10.22sec, where the old car managed to duck below the 10-second barrier (9.64sec), and at 160kph, the new model is a good two seconds behind.