The 100,000-km (62,000-mile) spark plug from BERU AG has platinum electrode tips and an additional ring electrode around the insulator. With this spark plug, all three functional parameters, sparking voltage, shunt, and spark gap accessibility for the mixture, remain almost constant over its entire life cycle. The 60,000-km (37,000-mile) spark plug has four ground electrodes on two different levels and high thermal flexibility that covers more than one heat range. Both plugs have a high cold starting ability, operate without misfiring, and facilitate complete fuel combustion for low hydrocarbon emissions.