But hybrids were left off the list. According to technoride (The Ten Best High-Tech Engines)
Audi and General Motors have two engines each on the list. Others are from BMW, DaimlerChrysler, Ford, Mazda, Nissan, and Toyota. While hybrid engines won in past years, rising expectations kept Honda and Toyota engines off this year's list. Mixed real-world fuel economy, reduced economy in cold weather, and non-premium sounds from premium-price hybrid engines were all factors, says Ward's.
It seems hybrid engines are being held to a higher standard this year. And since there was little advancement, they were left off the list.