Like other automakers in the European market, Toyota has created a green label to identify its models that produces the least CO2. This usually means a base engine underhood with a few improvements such as low-rolling resistance tires, low-viscosity motor oil, and aerodynamic tweaks. Toyota calls their clean line-up Optimal Drive. In the case of the new Toyota RAV-4, claimed by the company to be the cleanest AWD in the UK, Optimal Drive can be had in both diesel and gasoline flavors.
The diesel is a revised 2.2-liter common-rail engine (named D-4D) which gets 10 percent more power and torque than the previous unit, 14 percent more mileage (bumped to 40.5 mpg U.S., or 5.8 l/100) and 11 percent fewer CO2 emissions. The gasoline has a 2-liter Valvetronic unit that improves mileage by 20 percent (31.4 mpg U.S., or 7.5l/100km) from the unit it replaces as well as a drop in CO2 emissions of 16 percent. Both achieve their best numbers with 6-speed manual gears, although the diesel can have an optional 6-speed automatic and the gasoline can use a CVT called Multidrive. Full press release after the jump.