The Mazda 3 IV Hatchback, produced from 2019 to August 2022, represents the fourth generation of Mazda’s globally popular compact car. Within this generation, the 2.5 SkyActiv-G variant, generating 186 horsepower, occupied a significant position in the North American market as a step up from the base 2.5-liter engine, offering a balance of performance and efficiency. This model utilized Mazda’s SkyActiv technology suite, focusing on maximizing combustion efficiency and reducing emissions. The “CDA” designation refers to the Skyactiv-Drive automatic transmission, a key component of this particular configuration. It was positioned as a mid-range offering, appealing to buyers seeking more power than the base model but not requiring the higher cost and sport-tuned features of the premium trims.
Technical Specifications
| Brand | Mazda |
| Model | 3 |
| Generation | IV Hatchback |
| Type (Engine) | 2.5 SkyActiv-G (186 Hp) Skyactiv-Drive CDA |
| Start of production | 2019 |
| End of production | August, 2022 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Hatchback |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption (urban) | 9 l/100 km (26.1 US mpg) |
| Fuel consumption (extra urban) | 6.7 l/100 km (35.1 US mpg) |
| Fuel Type | Petrol (Gasoline) |
| Power | 186 Hp @ 6000 rpm |
| Torque | 252 Nm @ 4000 rpm (185.87 lb.-ft. @ 4000 rpm) |
| Engine layout | Front, Transverse |
| Engine displacement | 2488 cm3 (151.83 cu. in.) |
| Number of cylinders | 4 |
| Engine configuration | Inline |
| Cylinder Bore | 89 mm (3.5 in.) |
| Piston Stroke | 100 mm (3.94 in.) |
| Number of valves per cylinder | 4 |
| Fuel injection system | Direct injection |
| Engine oil capacity | 4.5 l (4.76 US qt | 3.96 UK qt) |
| Coolant capacity | 6.3 l (6.66 US qt | 5.54 UK qt) |
| Trunk (boot) space (minimum) | 569 l (20.09 cu. ft.) |
| Fuel tank capacity | 50 l (13.21 US gal | 11 UK gal) |
| Length | 4460 mm (175.59 in.) |
| Width | 1795 mm (70.67 in.) |
| Height | 1440 mm (56.69 in.) |
| Wheelbase | 2725 mm (107.28 in.) |
| Drivetrain Architecture | Front wheel drive |
| Number of gears and type of gearbox | 6 gears, automatic transmission |
| Tire size | 215/45 R18 |
| Wheel rims size | 18 |
Powertrain & Engine Architecture
The heart of this Mazda 3 variant is the 2.5-liter SkyActiv-G inline-four cylinder engine. This engine is a naturally aspirated powerplant, meaning it doesn’t utilize a turbocharger or supercharger. The SkyActiv technology focuses on high compression ratios (typically around 13:1 to 14:1) to improve thermal efficiency. This is achieved through careful engineering of the combustion chamber, piston design, and valve timing. Direct injection is employed, delivering fuel directly into the cylinders for precise control and improved fuel economy. The engine utilizes a dual overhead camshaft (DOHC) valvetrain with four valves per cylinder, optimizing airflow for increased power output. The SkyActiv-Drive automatic transmission is a six-speed unit with a torque converter. It’s designed to provide smooth and efficient shifting, contributing to the overall driving experience. Unlike some conventional automatics, the SkyActiv-Drive aims for quicker shifts and a more direct feel.
Driving Characteristics
The 186 horsepower and 185.87 lb-ft of torque offered by this configuration provide a noticeable step up in performance compared to the base engine. Acceleration is brisk, and the car feels capable in everyday driving situations. The SkyActiv-Drive transmission is generally responsive, although it doesn’t offer the same level of engagement as a manual transmission. Gear ratios are tuned for a balance of fuel efficiency and performance. The automatic transmission does a good job of keeping the engine in its optimal power band, providing adequate acceleration for merging onto highways and passing other vehicles. Compared to the manual transmission equipped models, the automatic sacrifices some driver involvement but gains convenience. Compared to higher-output trims, such as those with turbocharged engines, this variant offers a more linear power delivery and a less aggressive driving experience.
Equipment & Trim Levels
The 2.5 SkyActiv-G with SkyActiv-Drive was typically offered in mid-level trim packages, such as the Select, Preferred, and Premium trims. Standard features generally included Mazda’s infotainment system with an 8-inch display screen, Apple CarPlay and Android Auto integration, Bluetooth connectivity, and a suite of safety features including automatic emergency braking, lane departure warning, and adaptive cruise control. Interior upholstery was typically cloth, with options for leatherette or genuine leather in higher trims. Optional extras included a premium sound system, a power sunroof, heated front seats, and a navigation system. The dashboard configuration was consistent across trims, featuring a clean and modern design.
Chassis & Braking
The Mazda 3 IV Hatchback utilizes a front-wheel-drive platform with independent suspension in the front and a torsion beam rear suspension. The suspension is tuned to provide a comfortable ride while maintaining good handling characteristics. The front suspension features MacPherson struts, while the rear torsion beam offers a compact and lightweight solution. Braking duties are handled by disc brakes on all four wheels, with ABS (Anti-lock Braking System) standard. The braking system provides adequate stopping power for everyday driving. Stabilizer bars are fitted to both the front and rear axles to reduce body roll during cornering.
Market Reception & Comparison
Critics generally praised the Mazda 3 IV Hatchback for its stylish design, refined interior, and engaging driving dynamics. The 2.5-liter engine with the SkyActiv-Drive transmission was considered a good compromise between performance and fuel economy. Fuel economy figures were competitive within the compact car segment, averaging around 28 mpg combined. Reliability was generally good, with few reported issues with the engine or transmission. Compared to other trims in the lineup, this variant offered a more affordable entry point to the 2.5-liter engine, making it a popular choice for buyers who wanted more power without the higher cost of the premium trims. Some reviewers noted that the automatic transmission could feel slightly hesitant at times, but overall, it was well-regarded.
Legacy
The 2.5 SkyActiv-G engine and SkyActiv-Drive transmission have proven to be reliable powertrains. In the used car market, these models hold their value relatively well, due to Mazda’s reputation for quality and durability. The SkyActiv technology continues to be a cornerstone of Mazda’s engineering philosophy, and the lessons learned from this generation of Mazda 3 have been incorporated into subsequent models. The combination of a naturally aspirated engine, a responsive automatic transmission, and a well-balanced chassis makes this variant a compelling option for buyers seeking a fun-to-drive and fuel-efficient compact car.
