Suzuki has today announced the addition of low-rolling resistance tyres to its ultra-efficient Alto light car range, leading to a marginal improvement in fuel consumption and CO2 emissions for both the automatic and manual variants.
The manual model sees fuel consumption drop from 4.8 l/100km to 4.7 l/100m (2.2 percent improvement) and CO2 emissions drop from 113g/km to 110g/km (3.3 percent).
For the automatic Alto, fuel consumption falls from 5.5 l/100km to 5.3 l/100km, and CO2 emissions are down from 130g/km to 126g/km.
The Alto's updated footwear follows the announcement this week that the 2010 Suzuki Alto has landed the number one spot in the NRMA's 2009-2010 operating costs tests.
Beating out a field of 620 contenders, the NRMA operating costs calculator shows that the 1.0 litre, five-speed Suzuki Alto GL five-door ($12,490 drive-away) has a total weekly cost of just $88.82.
The slightly pricier Alto GLX ($12,990) came in second with a total weekly cost of $94.95, followed by the 1.4 litre five-speed manual Hyundai Getz (which topped the 2010 RACV 'Driving Your Dollar' survey) with a total weekly cost of $97.50.
One of the main differences between the RACV survey and the NRMA operating costs calculator is the insurance factor, with the NRMA calculator allowing shoppers to enter their own insurance amount.
"Insurance costs can have a major impact on the costs of operating a car," NRMA's Brad O'Hara said.
"Allowing motorists to enter their own insurance amount is fundamental in creating an accurate running costs figure."
As with the RACV survey, the NRMA operating costs list found the Toyota LandCruiser Sahara to be among the more expensive vehicles to own and operate, along with the Holden Caprice, both costing around $360 per week.
The NRMA Motoring & Services list of Australia's cheapest cars to run in 2009-2010 can be found here.