Back in 2009, the Chinese government agreed to slash sales tax on vehicles sporting engines that displace 1.6 liters or less. The decision, which halved sales tax from ten percent to five percent, should've spurred the purchase of fuel-efficient autos. Apparently, it didn't.
Engine Size Tax
Last year, the state of Washington contemplated a tax that would be placed on vehicles dependent upon the displacement of its engine. The displacement tax was eventually discarded but not forgotten. Automakers noted the possibility of this tax cropping up again in the future and marked it in their books.