Make sure you start learning when these events are taking place near you, and try to get to a few in one morning for top efficiency. (musingsofamariominion.com)
At this point, after six years, the battery is still operating at top efficiency. (autolist.com)
Numerous extra measures employed to ensure top efficiency mean that the Audi Sportback concept is expected to achieve impressive fuel consumption figures of 5.9 litres of diesel per 100 kilometres. (ausmotive.com)