The Opel Insignia is the vehicle with the fewest defects, according to the results of the DEKRA Faults Report 2011.
With an index of 96.1% fault-free Insignia, the Opel flagship, achieved the best result of cars tested by the German inspection organisation.
This is the second consecutive year an Opel vehicle took this honour following the Corsa's victory in the Best Individual Ranking category in 2010.
The DEKRA generates its annual Faults Report by conducting precise type assessment in eight vehicle type classes and three kilometre reading ranges.
The Faults Report is based on data from 15m inspections made on 230 different models.
"This fantastic result is further proof that the quality not only of the Insignia but of our whole model portfolio is top class," said Alain Visser, Opel/Vauxhall Vice President Marketing, Sales & Aftersales on receiving the prize in Rüsselsheim.
"We promise our customers top quality and underline this with a life-long guarantee!"
Wolfgang Linsenmaier, Executive Director at DEKRA Automobile GmbH, added: "I am delighted to be able to congratulate Opel for achieving the best individual ranking in the overall evaluation for the second year in a row!
"At 96.1% fault-free, the Opel Insignia achieved the best result across all vehicle classes."
Since it was launched in 2008, the Insignia, Car of the Year 2009, has received over 40 international awards for its attractive design and innovative technology.