2021 is going to be a very interesting year for the Mazda3 as two more engines become available.
According to separate reports from Jalopnik and Hagerty, Mazda will be dropping in the turbocharged 2.5L four-cylinder found in the 6, CX-5, and CX-9. The engine produces 227 horsepower on regular or 250 on premium. Like other Mazda models with this engine, the 3 will have it paired only with a six-speed automatic. Both reports say the engine will have AWD as standard. According to Hagerty's source, the engine will be available on a new trim called Premium Plus - likely taking the top spot in the 3's trim lineup. The source also confirmed this engine will not mean the return of the Mazdaspeed name for a hot variant.
The other engine is a 2.0L four-cylinder that Jalopnik reports is only for the sedan. Hagerty believes this engine is the SkyActiv-G used in the previous-generation 3, not the SkyActiv-X with its compression-ignition system.
Not surprisingly, Mazda said they "“have not announced any details for the 2021 Mazda3," when asked about this.