Where are the Japanese in the top 10?

Consumer reports – Top 10 cars of 2015 in the US.

Consumer Reports buys all their tested cars anonymously and puts each through more than 50 tests at a test facility in Connecticut.
These top 10 models outperformed, outscored, and outclassed their competitors, demonstrating all-round excellence. Common among these all-stars are benchmark acceleration, braking, and handling performance, with superior comfort and convenience to boot.
It’s very US focused and tends to reward car developed for the US market rather than the UK or European market and many models are different in the US than in Europe. However the results are interesting and should make positive reading for Germans with 2 Audis, 2 Mercedes, a Porsche and a BMW as well as the Tesla chaps in Silicon Valley.
Audi A6
Chevrolet Impala
Audi A8
Chevrolet Corvette Stingray
Mercedes-Benz E250 Diesel
Porsche 911
Mercedes-Benz S550
BMW M235i
Tesla Model S
Tesla Model S P85D
The summary from Consumer Reports:

Two Teslas on our Best of 2015 list? You betcha. We didn’t think it was possible, but the 691-hp P85D wowed us even more than the base model Tesla S. The performance geek in us loves that it rockets to 60 mph in just 3.5 seconds while delivering 1.02 g’s of horizontal accelerative force in less than a quarter-second. No other street-legal car can achieve that. The hot rod P85D has the same range as the standard 85-kilowatt version and still provides pinpoint handling, and a firm yet comfortable ride. All-wheel drive and Autopilot active safety features are also available. Even though reliability has dropped to below average, our subscribers rate the Tesla Model S as the most satisfying car in our survey. Considering this model’s otherworldly performance, well, that’s not shocking.