Spied: Volkswagen Filmed Trying Out XL1 Diesel-Electric Hybrid

The XL1 is Volkswagen's vision of a plug-in hybrid car that returns an amazingly low combined fuel consumption of 0.9lt/100km, equal to 261 mpg US and 313 mpg UK, or to be precise, MPGe (Miles per gallon gasoline equivalent) since this figure includes the use of both the internal combustion engine and the battery.

The two-seater model was presented as a concept last year and is now heading for very limited run production starting from next year - if all goes according to plan. VW's engineers were filmed in Spain completing new tests with the car as they prepare for its introduction.

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