Maruti is developing a small two-cylinder 800cc diesel engine along with Suzuki Motor Corp in Japan. The all-new diesel engine is likely to punch 40 horsepower and may deliver fuel efficiency of 25-30 kilometres to a litre.Testing and validation is currently on in Japan and, if all goes well, the project may come down to India for indigenisation in 6-12 months. According to conservative estimates, it will be ready for a rollout by 2015 in India. The engine is likely to power the next generation A-Star, or globally Alto, which has not made a major inroad into the country. "The development is at a very initial stage. It is a ground up project, and a lot of effort is being put in. The engine has to deliver the required level of performance, as well as fuel efficiency. There is no official response from Maruti, yet.