In the era of high oil prices, the advantages of economical cars are more prominent, and they are increasingly becoming the mainstream of the automobile market. According to statistics from the China Association of Automobile Manufacturers, from January to September 2009, half of the top ten sedan brands were economical cars. For most income-stable office workers, buying an economical and practical car as a means of transportation not only fulfills their dream of owning a car but is also cost-effective.