Which Peugeot model was the world's first mass-production diesel-electric hybrid?

The Peugeot 3008 HYbrid4 was the world's first mass-production diesel-electric hybrid automobile.

Peugeot launched the first-generation 3008 HYbrid4 in 2012 after introducing its diesel-electric system in the early 2010s. The vehicle combined a 2.0-liter HDi diesel engine driving the front wheels with an electric motor driving the rear wheels, creating an electrically assisted four-wheel-drive layout without a conventional mechanical driveshaft between the axles.

The HYbrid4 system offered several driving modes, including Auto, Sport, four-wheel drive, and ZEV, or zero-emission vehicle mode. Its six-speed automated manual transmission and rear electric motor gave the compact crossover a distinctive blend of diesel efficiency, electric assistance, and on-demand all-wheel drive.

A common mix-up is the Peugeot 508 RXH, which also used HYbrid4 technology but arrived later. The 3008’s claim concerns the first mass-produced diesel-electric passenger car, not the first hybrid vehicle of any kind; gasoline-electric hybrids such as the Toyota Prius came earlier.