Luton – The Vauxhall Insignia has proven itself to be an exceptionally frugal option in its segment, having achieved over 1,300 miles on a single tank of fuel. The 1.6 CDTi ‘Whisper Diesel’ 136PS ecoFLEX manual model with Start/Stop was driven from the Alps in Switzerland to the North Sea and back again, clocking up 1,311 miles in total...
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