Based largely on Opel's 1.4L turbocharged gas engine, the LPG unit features strengthened engine valves and valve seat-inserts, along with a revised engine control unit. All Insignia LPG models, which develop a respectable 140 horsepower, will be equipped with a six-speed manual gearbox.
The driver can switch between LPG and gas modes via a switch on the Insignia's dash.
Although about 25 percent less efficient than the Insignia's 1.4L gasoline engine - the Insignia LPG achieves about 31mpg whereas the gas version can hit 41mpg - the LPG engine holds a distinct advantage when it comes to fuel costs. A liter of LPG costs about € 0.70, compared to € 1.53 for a liter of high-octane gasoline. That difference means Insignia drivers can expect to save nearly 40 percent when filling up with LPG.
Insignia drivers shouldn't have a hard time finding LPG as 35,000 gas station across Europe currently carry the fuel.
