Vauxhall Insignia BiTurbo, 195 PS and 129 g/km CO2

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The new Vauxhall Insignia BiTurbo has a twin-sequential turbocharged diesel engine with nearly 200 PS yet emissions as low as 129 g/km CO 2
.

It’s also available with a choice of front or adaptive four-wheel drive.

This is Vauxhall’s most powerful diesel engine ever, producing 195 PS and 400 Nm of torque, and it’s available with a choice of five-door Hatch and Sports Tourer bodies in SRi, SRi Vx-line and Elite trims, priced from £27,120.

The twin-sequential turbocharged diesel is based on the existing 1956cc unit which powers key models in the Insignia, Astra and new Zafira Tourer range. However, in BiTurbo form the engine produces up to 35 PS more power and a significant 50 Nm of extra torque, reducing the 0-60 mph time by nearly one second to 8.2 seconds (in the Insignia front-wheel drive Hatch).

But thanks to a package of features such as standard Start/Stop, the front-wheel drive Hatch achieves a combined 57.6 mpg, 2.2 mpg better than the single-turbo 2.0 CDTi 160 PS model. The manual front-wheel drive Sports Tourer emits 134 g/km CO 2
and returns 55.4 mpg.

The manual all-wheel drive Hatchback returns 54.4 mpg with 146 g/km CO 2
. Even the Sports Tourer achieves 51.4 mpg with 149 g/km CO 2
in manual all-wheel drive form. This version of the car costs £31,105.

The use of sequential turbocharging means that the smaller turbo accelerates quickly at lower engine speeds to eliminate ‘lag’, providing 350vNm of torque from just 1500 rpm. In the mid-range, both turbochargers work together, with a bypass valve allowing gases to flow from the small to large unit; during this phase, maximum torque of 400 Nm is produced between 1750-2500 rpm. From 3000 rpm, all gases flow directly to the larger turbo, ensuring performance is maintained at higher engine speeds.

Vauxhall’s FlexRide adaptive damping is also standard on all Insignia BiTurbos (normally a £790 option on front-wheel drive Insignias). The system reacts within milliseconds to driver inputs and can ‘learn’ how the car is being driven and adapt damper settings accordingly. Drivers can also select Tour and Sport buttons, and configure the throttle, steering and damper settings in Sport mode separately.

On four-wheel drive models, FlexRide is integrated with the car’s Torque Transfer Device (TTD) and the rear axle’s electronically controlled Limited Slip Differential (e-LSD). These features allow torque to be automatically transferred between front and rear wheels, and between left and right wheels on the rear axle, offering exceptional levels of traction, grip and control.

In common with other models in the Insignia range, the BiTurbo has the option of Vauxhall’s new Front Camera System, with traffic sign recognition and lane departure warning, and Adaptive Cruise Control, which allows the driver to maintain a set distance from the car in front.

Vauxhall Insignia Sports Tourer ecoFLEX road test