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The Mazda 3 Auto offers a remote vehicle starting system, so the vehicle can be started from inside the driver's house. This allows the driver to comfortably warm up the engine before going out to the vehicle. The Civic Si doesn’t offer a remote starting system.
When two different drivers share the Mazda 3 Preferred/Carbon/Premium/Turbo, the memory seats and mirrors make it convenient for both. Each keyless remote activates different, customized memories for the driver’s seat position and outside mirror angle. The Civic Si doesn’t offer a memory system.
The Mazda 3 Premium/Turbo has a standard heads-up display that projects speed, warning and navigation instruction readouts in front of the driver’s line of sight, allowing drivers to view information without diverting their eyes from the road. The Civic Si doesn’t offer a heads-up display.
The Mazda 3’s front and rear power windows all open or close fully with one touch of the switches, making it more convenient at drive-up windows and toll booths, or when talking with someone outside the car. The Civic Si’s rear power window switches have to be held the entire time to open or close them fully.
The Mazda 3’s power window, power lock, power mirror and cruise control switches are lit from behind, making them plainly visible and easier to operate at night. The Civic Si’s passenger power window switches are unlit, making them difficult to find at night and operate safely.
The Mazda 3’s rain-sensitive wipers adjust their speed and turn on and off automatically based on the amount of rainfall on the windshield. This allows the driver to concentrate on driving without constantly adjusting the wipers. The Civic Si’s intermittent wipers change speed with vehicle speed, but can’t turn on and off or change speed based on changing rainfall.
To help drivers see further while navigating curves, the Mazda 3 Premium/Turbo has standard adaptive headlights to illuminate around corners automatically by reading vehicle speed and steering wheel angle. The Civic Si doesn’t offer cornering lights.
When the Mazda 3 Preferred/Carbon/Premium/Turbo is put in reverse, both rearview mirrors tilt from their original position. This gives the driver a better view of the curb during parallel parking maneuvers. Shifting out of reverse puts the mirrors into their original positions. The Civic Si’s mirrors don’t automatically adjust for backing.
The Mazda 3’s optional rear and side view mirrors have an automatic dimming feature. These mirrors can be set to automatically darken quickly when headlights shine on them, keeping following vehicles from blinding or distracting the driver. The Civic Si doesn’t offer the luxury of automatic dimming mirrors.
The Mazda 3 Preferred/Carbon/Premium/Turbo has standard heated front seats, which keep the driver and front passenger extremely comfortable in the winter. Heated seats aren’t available in the Civic Si.
On extremely cold winter days, the Mazda 3 Turbo’s standard heated steering wheel provides comfort, allowing the driver to steer safely and comfortably before the car heater warms up. The Civic Si doesn’t offer a heated steering wheel.
The Mazda 3 Select/Preferred/Carbon/Premium/Turbo’s standard dual zone air conditioning allows the driver and front passenger to choose two completely different temperatures so people with different temperature preferences won’t have to compromise. This makes both the driver and front passenger as comfortable as possible. The Civic Si doesn’t offer dual zone air conditioning.
Both the Mazda 3 and the Civic Si offer rear vents. For greater rear passenger comfort, the Mazda 3 Select/Preferred/Carbon/Premium/Turbo has standard rear air conditioning vents to keep rear occupants cool in summer or warm in winter. The Civic Si doesn’t offer rear air conditioning vents, only heat vents.
To direct the driver from any location to a given street address, a GPS navigation system is standard on the Mazda 3 Premium. The Mazda 3’s navigation system also has a real-time traffic update feature that offers alternative routes to automatically bypass traffic problems. (Service not available in all areas.) The Civic Si doesn’t offer a navigation system.
To quickly and conveniently keep personal devices charged without cables tangling and wearing out, the Mazda 3 offers an available wireless phone charging system (Qi) in the center console. The Civic Si doesn’t offer wireless personal charging.