Why do a 88 Mercedes 300e has two fuel pumps?

The 1988 Mercedes 300E is equipped with two fuel pumps to ensure reliable fuel delivery under varying driving conditions. The primary pump, located inside the fuel tank, draws fuel and sends it to the engine, while the secondary pump, usually located along the fuel line, helps maintain adequate pressure and flow, particularly during high-demand situations. This dual-pump system enhances performance, prevents starvation, and contributes to engine efficiency. Additionally, having two pumps provides a backup in case one fails, promoting reliability.