not too sure about that.
I think variable valve technology was added in 2012 in ritz as far as i remember
For your Info petroholic as per maruti
New Delhi, October 26, 2009: Maruti Suzuki, the largest car manufacturer in the country, today launched the new Ritz with an engine powered by advanced VVT technology. The company has also introduced a 5-speed manual transmission variant of the new Ritz.
The environment friendly new Ritz is amongst the Hatchback segment to be BSIV compliant in the country. BSIV regulations are scheduled to be introduced in the country in April 2010.
The VVT or Variable Valve Timing allows the timing of the intake valve to be changed while the engine is in operation, thereby ensuring that there is never a shortage or wastage of power. This leads to improved engine efficiency, optimized fuel consumption and lesser carbon emissions. With the advanced VVT technology, the car starts, accelerates and climbs steep slopes better. In essence, the technology is an intelligent system leading to a smoother, more luxurious drive and better mileage.