Mazda3 Gets a Makeover to Go with Its New Engine

Last year Mazda Motor Corp. gave its carryover Mazda3 small sedan a high-efficiency Skyactiv 2.0-liter engine. For 2014, the popular model gets a comprehensive redesign to further boost fuel economy.

The unusual sequencing provided more time to develop the Skyactiv engine program that Mazda intends to eventually expand to its entire lineup. The engine's U.S. highway fuel economy rating increased to 41 mpg from 40 mpg in the 2013 model.

The redesigned Mazda3 includes a chassis that is 30% stiffer. The suspension uses carryover MacPherson struts in front and multi-link system in back, but with new components that alter the geometry.

The car's new electric steering system is tuned with an unusually high 6.5 caster angle that Mazda says produces a positive mechanical return for better steering feedback and on-center feel.

The 2014 model also gains more room in the engine compartment for longer exhaust runners. The longer runners are part of a combustion control system that allows the 2.0-liter four banger to operate at a diesel-like 13.0:1 compression ratio with regular-grade gasoline.

The Mazda3's engine lineup for 2014 includes the 2.0-liter 4-cylinder Skyactiv engine, now rated at 155 hp, and an optional 2.5-liter Skyactiv four that makes 184 hp and replaces last year's 2.5-liter engine. Both powerplants can be mated to a 6-speed manual or 6-speed automatic transmission.

Buyers may opt for the company's new i-eLoop system, which uses the engine's alternator to charge an ultracapacitor during braking and deceleration. The stored power is then used to help run the car's electrical system, thus reducing alternator drag on the engine. The effect isn't reflected in the car's fuel economy rating, but Mazda says the system hikes real-world fuel economy by about 5%.