Mazda 3 BM Review: Complete Third Generation Guide

The third generation Mazda 3 (BM) became a landmark model for the Japanese manufacturer, introducing the revolutionary SkyActiv technologies to the world for the first time. This generation fundamentally changed the approach to automotive design, offering a new level of efficiency and reliability.

History and Design

The Mazda 3 BM premiered in 2013 at the Australian Motor Show. The new "Kodo" (Soul of Motion) design code completely transformed the car's appearance, making it more expressive and dynamic. The aggressive front end with characteristic grille, flowing body lines, and expressive headlights created a recognizable appearance that immediately distinguished the model among competitors.

Alongside the hatchback, a sedan appeared with similar design solutions. The interior also underwent radical changes, receiving a more modern architecture and quality finishing materials.

Engine Lineup

Classic Z6 1.6 Liter

To ensure model accessibility, Mazda retained the proven 1.6-liter Z6 gasoline engine producing 104 hp in the lineup. This engine was previously used on the Mazda 323 and established itself as an exceptionally reliable unit.

The Z6 engine can operate without serious intervention up to 400,000 kilometers, making it an excellent choice for practical car owners. Simple construction and undemanding maintenance are the main advantages of this engine.

Revolutionary SkyActiv-G Motors

The real highlight of the lineup became the new SkyActiv-G engines with 1.5 and 2.0-liter displacement producing 120 and 150 hp respectively. These units were created using technologies from motorsport and innovative solutions.

The key feature was a compression ratio up to 14:1 - a record figure for naturally aspirated gasoline engines. This solution allowed compliance with Euro-6 environmental standards while maintaining excellent dynamic characteristics without using turbocharging.

To achieve such performance, engineers completely redesigned:

• Piston construction
• Fuel injection system
• Ignition system
• Combustion chamber geometry

International Versions

For the European market, engine settings were adapted, offering power outputs of 100, 120, and 165 hp. A 2.2-liter SkyActiv-D turbodiesel producing 150 hp was also added to the lineup.

The American market received a 2.5-liter SkyActiv-G producing 184 hp as the top variant, while the base remained a 2.0-liter engine producing 155 hp.

Transmissions

Manual Transmissions

All engines were equipped with six-speed manual transmissions, except for the base 1.6-liter engine, which received a five-speed manual. These transmissions were distinguished by reliability and precise shifting.

Automatic Transmissions

The old 1.6-liter engine was paired with a four-speed FN-4AEL automatic - a time-tested transmission that can operate without problems up to 250,000 km with proper maintenance.

SkyActiv engines received new six-speed SkyActiv-Drive automatics model FW6AELL. After the 2016 facelift, the six-speed automatic was also adapted for the popular 1.6-liter engine.

Z6 Engine Operation Features

Drive Belt and Auxiliary Equipment

The auxiliary equipment drive belt, tensioners, and pulleys serve an average of 80-100 thousand kilometers. When scoring or cracks appear on the belt, immediate replacement is required. A sticking tensioner also signals the need to update the entire kit.

Injection and Ignition System

Upper row oxygen sensors can fail with untimely injector cleaning. Regular injection system cleaning every 60,000 km will help avoid this problem. Timely spark plug replacement is also important.

Engine Mounts

Engine vibrations at idle often indicate wear of the right engine mount. Replacing this part is a simple operation that can be performed independently with basic tools.

Valve Adjustment

After 140-150 thousand kilometers of mileage, valve adjustment may be required. This procedure is not critical but helps maintain optimal engine operation.

Intake System

Floating idle speed is often related to the intake manifold gasket, which loses its properties over time. The knock sensor located below may fail along with it.

SkyActiv-G Engine Features

Fuel Requirements

SkyActiv engines are extremely demanding regarding fuel quality. Due to high compression ratio and direct injection system, the minimum gasoline octane rating should be 95, and preferably use 98-octane gasoline.

High-Pressure Injection System

The high-pressure fuel pump is driven by the exhaust valve camshaft. System pressure reaches 200 bar. Injectors have a special design with six injection channels in each.

Ignition System

SkyActiv units require using only iridium spark plugs. This is related to the features of ion sensors in ignition coils, which perform measurements by analyzing current fluctuations between spark plug electrodes after ignition.

Timing Chain

Different timing chains are used on various SkyActiv engines. Replacement may be required around 150,000 km mileage. It's important to use original components as chains differ in construction.

Variable Valve Timing System

Valve timing control is accomplished through a hydraulic coupling installed on the exhaust camshaft. With decreased oil pressure, the system may operate incorrectly, requiring attention to oil pump condition.

Suspension and Chassis

Front Suspension

The Mazda 3 BM is equipped with MacPherson struts in front. Shock absorbers show good reliability, but with aggressive operation, working fluid leakage traces may appear.

Rear Suspension

The rear multi-link suspension provides good handling and comfort. Shock absorbers here also show acceptable durability.

Springs

Suspension springs may have varying degrees of reliability - some specimens serve long, others may break prematurely. Using quality replacements from proven manufacturers is recommended.

Stabilizer Bars

Cars with around 100 thousand kilometers of mileage often require replacement of stabilizer bar links. This is a wear item whose replacement presents no difficulty.

Brake System

Calipers

Brake calipers require regular maintenance. Prevention with cleaning and lubrication of all guides and friction parts will help extend their service life.

CV Joint Boots

CV joint boots proved not to be the most durable. When cracks appear, joint protection requires immediate replacement to prevent dirt and moisture entry.

Body and Corrosion Resistance

The metal treatment quality of the Mazda 3 BM is at a high level. The metal itself is sufficiently strong and corrosion-resistant. With proper care and absence of damage, the body can maintain its original appearance for a long time.

Electronics and Multimedia

Multimedia System

The multimedia system with touchscreen in early versions could operate unstably, turning on and off spontaneously. This problem is solved by reflashing at official dealers.

Audio System

Top trim levels install a Boss audio system. With frequent use at high volume, speaker diffusers may not withstand the load and crack, leading to rattling sounds.

Mirror Electric Drive

The electric folding mirror drive proved quite capricious due to breaking plastic gears. Unfortunately, these parts are not sold separately, complicating repair.

Interior and Ergonomics

Material Quality

Interior material quality is generally acceptable, but there are individual remarks. Steering wheel trim may wear quickly, especially with active vehicle use.

Seats

The driver's seat with enhanced side support is designed for slender figures. Owners of large build may quickly wear side bolsters to an unsightly condition.

Sound Insulation

After 100 thousand kilometers of mileage, panel squeaking may appear - a typical problem for most cars in this class. Solved by traditional methods of treating problem areas.

Trim Levels and Equipment

Base Trim

Even base versions of the Mazda 3 BM received a decent level of equipment, including air conditioning, power windows, central locking, and other necessary options.

Top Active Plus Trim

The top trim includes:

• Navigation system
• Xenon headlights
• Dual-zone climate control
• Rear view camera
• Parking sensors
• Leather interior trim

Selection Recommendations

Engines

For calm operation, the proven 1.6-liter Z6 is excellent - a simple, reliable, and undemanding engine. Technology enthusiasts can choose SkyActiv units, but it's important to remember their demanding fuel quality and maintenance requirements.

Transmissions

Manual transmissions show excellent reliability. Among automatics, the new SkyActiv-Drive is preferable, although the old four-speed automatic serves long with proper maintenance.

Mileage

Specimens with mileage up to 100 thousand kilometers can be considered practically new. With 100-200 thousand kilometers mileage, it's important to carefully evaluate the vehicle's condition and maintenance history.

Maintenance and Operation

Service Schedule

For the Z6 engine, oil change is recommended every 10,000 km or once a year. SkyActiv engines require more frequent oil changes - every 7,000 km to ensure maximum service life.

Consumables

It's important to use quality consumables:

• Oil with appropriate approvals
• Original or quality analog filters
• Iridium plugs for SkyActiv engines
• Quality fuel with octane rating not below 95

Conclusion

The Mazda 3 BM represents an excellent balance between reliability, economy, and modern technologies. The model suits both conservative car owners choosing the proven 1.6-liter engine and innovation enthusiasts preferring SkyActiv technologies.

The key to long and trouble-free operation is regular maintenance, use of quality consumables, and attentive attitude toward the vehicle. Under these conditions, the Mazda 3 BM can serve for many years, pleasing the owner with reliability and comfort.

When choosing a used Mazda 3 BM, it's important to thoroughly check the maintenance history, engine and transmission condition, and ensure the absence of hidden defects. The right choice of a specific specimen is the key to successful and economical operation of this quality Japanese automobile.

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