Fuel efficient cars are vehicles that consume low amounts of fuel for the distance they travel and Australia is taking environmental and green living very seriously. Eco-friendly cars are part of the plan for a greener nation. Petroleum engine technology has been working on issues of more environmentally conservative use of petrol, but recently there have been major strides in the technology of hybrid and electric vehicles as well. Body style technology is also studied. Less wind resistance means less fuel is required for the distance travelled. Greenhouse performers are also available today. Here are five of the top brand car manufacturers that were in the top 10 selling cars Fasting For Weight Loss list at the end of August 2010: – Ford – Holden – Hyundai – Mitsubishi – Toyota Of these five top selling car makers, four had top performance in low greenhouse emissions at the end of August 2010. These low CO2 emission green cars were the Toyota Prius Hybrid, Ford Fiesta Diesel, Hyundai i30 Diesel, and Mitsubishi Colt Petrol. Of course, there are varying engines, transmissions and fuel types of these makers that might even have lower emissions than these did because these were rated according to best performance of the particular models listed. Now, of Australia’s top 10 best selling cars in August 2010, these five car makers had, as we have stated, models that made the list.