The Pinnacle of Advanced Technology

As seen in Vol. 2, where they ranked first and second, BMW engines proved their strength once again. Taking the top position is the model equipped with a 3.0-liter inline-6 DOHC engine,528iwhich, though slightly obscure, indicates the 5 Series model is powered by a 3.0-liter engine offering efficiency comparable to a 2.8-liter. Equipped with the Double VANOS variable valve timing system, it delivers a maximum output of 204 ps and peak torque of 310 Nm. Features like the brake energy regeneration system and electric power steering enhance performance across the board, including fuel economy, CO2 emissions, and power. In fact, it achieved the 2010 fuel economy standard with a 15% improvement and the 2005 emissions standard with a 75% reduction, becoming the first BMW model to qualify for tax reductions as an eco-car. Following this technologically advanced BMW is, surprisingly, Jaguar.

While not typically associated with environmental performance, theXFis a strategic model, the backbone of the new Jaguar, meticulously designed to rival German offerings. Although the 3.0-liter engine is largely carried over from the S-Type, it's evident that subtle improvements have been made to its environmental performance.

Also tying for second place is another unexpected sports model: the Audi A4's premium sports sedan,S4The 3.0-liter TFSI engine, equipped with a Roots-type supercharger, produces 334 ps. Despite its high performance, CO2 emissions are kept at 179 g/km. This exemplifies the Volkswagen Group's focus on downsizing engines, successfully balancing high output with environmental performance.

Model	CO2 Emissions	Displacement	Max Output	Max Torque	Fuel Economy	Price
BMW 5 Series 528i Sedan	178g/km	2,496cc	204ps	250Nm	11.4km/ℓ (10-15 mode)	¥7.15 million
Jaguar XF 3.0 luxury	179g/km	2,967cc	243ps	300Nm	7.3km/ℓ (10-15 mode)	¥6.5 million
Audi S4	179g/km	2,994cc	334ps	440Nm	30.1mpg	¥7.85 million