The number of passenger cars in Germany has increased continuously in recent years and reached a new high of 48.8 million in 2023. This means that on average, there are 1.2 passenger cars for the 40.7 million households in Germany. On average, new registra-tions amount to 3.1 million vehicles...

We use micro-level data on fuel consumption, mileage, and travel mode to study plug-in hybrid drivers' response to fuel prices. When fuel prices rise, plug-in hybrids reduce fuel consumption more than gasoline and diesel cars. They do not reduce their mileage but increase electric recharging,...