The 2024 Mazda CX-5 comes in 2.5 S and 2.5 Turbo model series, with the “2.5” referring to the size of the engine. The CX-5 2.5 S has a 2.5-liter four-cylinder engine making 187 horsepower. The CX-5 2.5 Turbo has a turbocharged version of the same engine good for 227 hp on regular octane gas.The CX-5 compact crossover SUV is the automaker’s best-selling model and it’s entering its eighth year in production since its last complete redesign.