Why does the Audi A2 have three spark plugs per cylinder?

I noticed that the Audi A2 has three spark plugs per cylinder, which seems different from other cars. How does this unique setup affect the engine's performance?

The Audi A2 has three spark plugs per cylinder to help with fuel efficiency and emissions. The additional spark plugs ensure a more complete combustion of the fuel, resulting in a cleaner and more efficient engine performance. As a tip, make sure to replace all three spark plugs at the same time for optimal results.