The new engine is smaller but more powerful than the existing 2.5-litre engine.
It is available only in a new feature-rich top-spec limited edition variant for now.
The new engine is still BS4 compliant but is expected to replace the 2.5-litre unit in the BS6 era (post April 2020).
At Rs 19.99 lakh, the new Z-Prestige attracts a premium of around Rs 3 lakh over the previous top-spec variant.