In celebrating 25 years of Wards 10 Best Engines, automakers were invited to submit videos focusing on powertrain challenges of the past and those lying ahead. This is the fourth of six videos that will post throughout the year.

In celebrating 25 years of Wards 10 Best Engines, automakers were invited to submit videos focusing on powertrain challenges of the past and those lying ahead. This is the third of six videos that will post throughout the year.

In celebrating 25 years of Wards 10 Best Engines, automakers were invited to submit videos focusing on powertrain challenges of the past and those lying ahead. This is the second of six videos that will post throughout the year.

From its humble beginnings in the basement of Detroit's Cobo Center in January 1995, the Wards 10 Best Engines competition has grown in stature and scope to include much more than internal-combustion engines. And we've had some fun along the way.

In celebrating 25 years of Wards 10 Best Engines, automakers were invited to submit videos focusing on powertrain challenges of the past and those lying ahead. Articles and videos will post throughout the year.

Wards editors discuss the rest of the 34 nominees in this year's Wards 10 Best Engines competition. In an earlier roundtable, editors discussed the winners.