Mercedes-Benz won 7 Formula One World Constructors’ Championship titles between 2014 and 2020.
The run began in 2014, the first season of Formula One’s 1.6-litre turbo-hybrid power-unit era. Mercedes’ works team, Mercedes-AMG Petronas, paired a highly efficient Mercedes power unit with the W05 Hybrid and won the championship in its first dominant season of the period. Lewis Hamilton and Nico Rosberg also finished first and second in the Drivers’ Championship standings.
Mercedes repeated the constructors’ success every year from 2014 through 2020. The seven-title sequence included Rosberg’s 2016 drivers’ crown and six drivers’ championships for Hamilton across the surrounding seasons. The achievement was a constructors’ record at the time, surpassing Ferrari’s run of six consecutive titles from 1999 to 2004.
A common mix-up is counting Mercedes’ 2021 title as part of the 2014–2020 span. Mercedes did win the 2021 constructors’ championship, extending its streak to eight, but that season falls outside the dates in the question.