Opel Insignia with the 160 hp 2.0 CDTI a quite potent top diesel in the portfolio, but in the face of excessive turbo lag and torque he cannot play up front in the premier league. Now the Rüsselsheim respond and bring a Bi-Turbo, which is the large Opel diesel-performers from Audi and BMW meet as equals, in addition genteel drinking habits.
The all-new twin-turbo system from Opel has two differently sized turbochargers, which operate separately and together. A small turbocharger ensures momentum even at low rpm and that’s how a possible lag-free acceleration from the bottom of guarantee. Positioned so already at 1,500 revolutions respectable 350 Nm. A technical specialty: When small turbocharger ensures a water-cooled charge air cooler to route its low air volume over a short distance into the combustion chambers.
Work in the mid-range first then together both turbochargers, with pre-compressed, the greater the intake air before it is further compressed in the smaller charger. A bypass valve diverts a portion of the exhaust gases continuously to the larger turbo. Opel promises by a continued strong acceleration. From around 3,000 rpm is only the large turbocharger and flows against the conventional, large charge air coolers supplied to the engine, resulting in a lush power delivery to make sure of itself at high speeds.
Marching forward afloat
Longitudinal Dynamic offers the maximum 195 hp and 400 Nm of torque payable two-liter four-cylinder diesel that great cinema: The 100-km/h-Sprint should take 8.7 seconds, top speed at 230 km / h.. Despite the good performance, the fuel consumption of the manually shifted version 2WD amount to 4.9 liters.
Forefront in the middle class, the Insignia drives it but still with no: Meanwhile, BMW has with the February 2012 starting 320d the bar a bit set higher: Here 184 hp is enough for a sprint time of 7.5 seconds and 235 km / h top speed at 4.5 liters fuel consumption. After all, the strong diesel Insignia leave behind the Audi A4, the 2.0 TDI 177 hp returnees to 228 km / h is good, at 5.1 liters fuel consumption.
