AT THE heart of the mechanical improvements and the sportier persona Barina has taken on with the SRi is a version of the 1.8-litre engine powering standard Astra models. Using premium unleaded petrol, the multi-valve double overhead cam engine can deliver 92kW of power at 6000rpm and 165Nm at 4600rpm, and sets up a power-to-weight ratio of 80kW per tonne. It produces fuel efficiency figures of 7.8L/100km on the city cycle and 5.4L/100km on the highway.