AIM OF DEVELOPMENT

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Vehicle Outline

Exterior design

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Interior design

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Engine

•  SKYACTIV-G 2.5 and SKYACTIV-D 2.2 have been adopted.

Engine mechanical (SKYACTIV-G 2.5)

•  For SKYACTIV-G 2.5, the following is performed to lower fuel consumption.

―  Improvement of mechanical resistance loss

•  Narrowed down crankshaft journal

•  Optimized piston skirt shape

•  Lowered piston ring tension

•  Roller follower adopted

•  Reduction of valve spring load

•  Stabilization of timing chain behavior

•  Optimized engine coolant passage

•  Optimized water pump impeller shape

•  Lowered drive belt tension

•  Optimized oil passage

•  Optimized oil pump shape

•  Oil pump discharging pressure control has been adopted.

―  Improvement of pumping loss

•  Variable valve timing mechanism has been adopted on both sides of intake and exhaust.

―  Cooling loss improvement

•  Coolant control valve adopted

•  Optimized engine coolant passage

Engine mechanical (SKYACTIV-D 2.2)

•  For SKYACTIV-D 2.2, the following is performed to lower fuel consumption.

―  Low compression ratio

•  Combustion efficiency by lower compression ration (14.4)

―  Weight reductions

•  Aluminum alloy cylinder block adopted

•  Exhaust manifold integrated cylinder heads adopted

―  Weight reduction and mechanical resistance loss improvements

•  Piston shape optimized

•  Narrowed down crankshaft journal

Engine control (SKYACTIV-G 2.5)

•  L-jetronic*1 and D-jetronic*2 type detectors have been combined for intake air amount detection, improving the accuracy of the intake air amount measurement.

―  MAF sensor adopted

―  MAP sensor adopted

―  IAT sensor No.1 and No.2 adopted

•  Valve timing control has been adopted on both sides of the intake and exhaust, improving fuel economy and emission performance.

Intake side: Electric variable valve timing control

―  Intake CMP sensor adopted

―  Electric variable valve timing motor/driver adopted

―  Electric variable valve timing motor/driver adopted

Exhaust side: Hydraulic variable valve timing control

―  Exhaust CMP sensor adopted

•  Engine oil variable control has been adopted reducing engine load.

―  Engine oil solenoid valve adopted

•  The engine coolant control valve adjusts the engine coolant control valve opening angle and supplies engine coolant to the appropriate engine coolant passage according to the changes in the engine coolant temperature.

•  Further engine warming has been promoted by blocking each water passage while the engine is cool.

―  Coolant control valve adopted

•  DC-DC converter control has been adopted for improved power supply stability.

―  DC-DC converter adopted

•  With the adoption of fuel pump control, fuel pump power consumption has been reduced, improving fuel economy.

―  Fuel pump control module adopted

•  Generator output control adopted, fuel economy/idling stability improved. (with i-stop system)

―  Current sensor adopted

•  With the adoption of the ion sensor, which detects pre-ignition, engine reliability has been improved.

•  LIN communication has been adopted to the current sensor (with i-stop system) and DC-DC converter for simplified wiring harnesses.

Engine control (SKYACTIV-D 2.2)

•  Two-step boost control has been adopted, realizing low emission, low fuel consumption, high torque, and high response.

―  Variable geometry turbocharger adopted

―  Regulating valve actuator adopted

―  Variable turbine geometry turbocharger actuator adopted

•  Engine coolant flow volume control has been adopted, realizing low fuel consumption.

―  Coolant control valve adopted

•  An exhaust gas recirculation (EGR) system has been adopted for cleaner exhaust emissions and improved fuel efficiency.

•  i-stop control has been adopted for improved fuel efficiency, reduced exhaust gas emissions, and reduced idling noise.

Suspension

Front suspension

•  A fluid-filled type front lower arm bushing has been adopted.

•  Strut-type suspension adopted.

•  For the front / rear crossmembers, the welded flange has been eliminated (flange-less), the cross-section expanded and the connection rigidity of the welded parts improved to achieve both rigidity and light weight.

•  By adopting a 6-point rigid mount-type front crossmember, the force generated from the tires is transmitted directly, and an agile vehicle response in low-to-mid speed range has been realized.

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Rear suspension

•  An multi-link rear suspension adopted.

•  For the front /rear crossmembers, the welded flange has been eliminated (flange-less), the cross-section expanded and the connection rigidity of the welded parts improved to achieve both rigidity and light weight.

2WD

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4WD

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Driveline/Axle

•  Unit-design, double angular ball bearings with low rotational resistance have been adopted for the front and rear axles.

•  Unit bearings that require no preload adjustment have been adopted for the front and rear wheels.

•  The following parts have been adopted to reduce vibration and noise:

―  Bell-shaped constant velocity joint has been adopted for the wheel-side joint of the front drive shaft.

―  A tripod-shaped constant velocity joint has been adopted for the differential-side joint of the front drive shaft.

―  For 4WD vehicles, bell-shaped constant velocity joint has been adopted for the wheel-side joint of the rear drive shaft.

―  For 4WD vehicles, a tripod-shaped joint has been adopted for the differential-side constant velocity joint.

―  For 4WD vehicles, 2-part, 1-joint type propeller shaft with middle shaft bearing has been adopted.

•  For 4WD vehicles, the following parts have been adopted to improve off-road mobility and handling stability:

―  Electronic 4WD control system which automatically and optimally controls drive torque distribution for the front and rear wheels.

―  Rear differential which integrates the coupling component to reduce size and weight.

•  Ball bearings/tandem ball bearings with low rolling resistance have been adopted for the inside of the rear differential and transfer.

Brakes

Conventional brake system

•  The following systems, mechanisms, and functions have been adopted to enhance safety.

―  Intrusion-minimizing brake pedal

―  Antilock brake system (ABS)

―  Electronic brake force distribution (EBD) control

―  Traction control system (TCS)

―  Dynamic stability control (DSC)

―  Roll over mitigation (ROM)

―  Electronic control brake assist

―  Vehicle roll prevention function

―  Hill launch assist (HLA)

―  Secondary collision reduction

―  Trailer stability assist (TSA)

―  AUTOHOLD

Vehicle front side (L.H.D.)

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Vehicle front side (R.H.D.)

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Vehicle rear side

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Dynamic stability control (DSC)

•  Electrical brake assist control has been adopted, improving safety.

•  The DSC HU/CM, integrating both the Hydraulic Unit (HU) and Control Module (CM), has been adopted, resulting in a size and weight reduction.

•  An enhanced malfunction diagnosis system, used with the Mazda Modular Diagnostic System (M-MDS), improving serviceability.

•  Serviceability improved by the automatic configuration function.

•  Receives the lateral-G, longitudinal-G, and yaw rate signals between the Sophisticated Air bag Sensor (SAS) control module and the DSC HU/CM via Controller Area Network (CAN) lines instead of the conventional combined sensor.

•  The vehicle roll prevention function, hill launch assist (HLA), roll over mitigation (ROM), secondary collision reduction, trailer stability assist (TSA) have been adopted, improving safety.

Vehicle front side (L.H.D.)

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Vehicle front side (R.H.D.)

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Vehicle rear side

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Transmission/Transaxle

FW6A(X)-EL

•  For SKYACTIV-G 2.5, six-speed FW6A(X)-EL automatic transaxle has been adopted.

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GW6A(X)-EL

•  For SKYACTIV-D 2.2, six-speed GW6A(X)-EL automatic transaxle has been adopted.

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Steering

•  A column-assist type Electric Power Steering (EPS) has been adopted.

•  A steering column with tilt/telescoping mechanism has been adopted, allowing fine adjustment of the driving posture.

•  A steering column and shaft with a shock-absorbing mechanism has been adopted.

•  The EPS Control Module (CM) has been integrated with the EPS motor, resulting in a size and weight reduction.

•  Serviceability has been enhanced by enabling high-function malfunction diagnosis using the Mazda Modular Diagnostic System (M-MDS).

(L.H.D.)

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(R.H.D.)

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Safety

•  The following have been adopted to improve safety.

―  360° view monitor

―  Advanced smart city brake support (Advanced SCBS)

―  Smart city brake support [Reverse] (SCBS R)

―  Adaptive front lighting system (AFS)

―  Adaptive LED Headlights (ALH)

―  Traffic sign recognition system (TSR)

―  High beam control (HBC)

―  Smart brake support (SBS)

―  Distance recognition support system (DRSS)

―  Lane departure warning system (LDWS)

―  Driver attention alert (DAA)

―  Blind spot monitoring system (BSM)

―  Lane-keep assist system

―  Mazda radar cruise control with stop & go function (MRCC with stop & go function) system

―  Electronic control brake assist

―  Electronic brake force distribution (EBD) control

―  Intrusion-minimizing brake pedal

―  ABS control

―  TCS control

―  DSC control

―  Vehicle roll prevention function

―  Trailer stability assist (TSA)

―  Roll over mitigation (ROM)

―  Secondary collision reduction

―  Steering shaft with energy adsorbing mechanism

―  Curtain air bags

―  Side air bags

―  Pre-tensioner and load limiter mechanisms

―  Seat belt warning alarm

―  ISOFIX and top tether anchors

―  The multi-load path and triple H-shaped

―  Straight structure

―  Ring structure

―  Active Bonnet

―  Auto light system

―  High-mount brake light

―  Emergency signal system (ESS)

―  Active driving display

―  Immobilizer system

―  Auto-dimming mirror

Driver's support

•  The following have been adopted to improve convenience and comfort.

―  Natural sound smoother

―  Electric parking brake (EPB)

―  AUTOHOLD

―  Electric Power Steering (EPS)

―  Heated steering wheel

―  Full-auto air conditioner

―  Power liftgate (PLG) system

―  UV protection glass

―  Heated outer mirrors

―  Outer mirror automatic folding

―  Rear window defogger

―  Power seat system

―  Seat warmer system

―  Seat ventilation system

―  Position memory system

―  Advanced keyless entry system

―  Keyless entry system

―  Push button start system

―  Running light system

―  Headlight auto leveling system

―  Auto wiper system

―  Headlight cleaner system

―  Center display

―  Commander switch

―  Multi-information display

―  Park assist system

―  Parking sensor system