4 most fuel-efficient petrol cars in India 

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Maruti Suzuki Celerio AMT

At 26.68kpl, the VXi AMT is the most fuel-efficient model of the Celerio

Maruti Suzuki Wagon R 1.0

The smaller 1.0 engine is more frugal, delivering up to 25.19kpl with the AMT gearbox

Maruti Suzuki Dzire AMT

The Maruti Suzuki Dzire is 7hp more powerful than before and more efficient in both 5-speed manual (23.26kpl) and 5-speed AMT (24.12kpl) form

Maruti Suzuki Baleno AMT

The ARAI-claimed fuel economy of the new engine with the manual gearbox is 22.35kpl, while the new AMT versions are said to return an even higher 22.94kpl.