With the introduction of new BS6 Phase 2 norms, Kia has had to replace the older 1.4-litre turbo-petrol unit with a new 1.5-litre unit. We have tested the Carens with the 1.4-litre engine before and now have had the perfect opportunity to test the new engine. Is the 1.5-litre engine better? @ninadambre finds out