The Mazda 3 IV Sedan 2.5 SkyActiv-G (186 Hp) with Skyactiv-Drive CDA automatic transmission was a key variant in the fourth generation of Mazda’s popular compact car, produced from 2019 through August 2022. Positioned as a mid-range offering, it balanced performance and fuel efficiency within the broader Mazda 3 lineup, which also included lower-powered engine options and higher-performance trims. This model represented Mazda’s continued refinement of the SkyActiv technology suite, focusing on maximizing combustion efficiency and delivering a responsive driving experience. It was primarily marketed in North America, Europe, and Asia, serving as a significant competitor in the crowded compact sedan segment.
Technical Specifications
| Brand | Mazda |
| Model | 3 |
| Generation | IV Sedan |
| 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 | Sedan |
| Seats | 5 |
| Doors | 4 |
| Fuel consumption (urban) | 8.7 l/100 km (27 US mpg, 32.5 UK mpg, 11.5 km/l) |
| Fuel consumption (extra urban) | 6.5 l/100 km (36.2 US mpg, 43.5 UK mpg, 15.4 km/l) |
| Fuel Type | Petrol (Gasoline) |
| Power | 186 Hp @ 6000 rpm |
| Power per litre | 74.8 Hp/l |
| 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 aspiration | Naturally aspirated engine |
| 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) | 374 l (13.21 cu. ft.) |
| Fuel tank capacity | 50 l (13.21 US gal | 11 UK gal) |
| Length | 4660 mm (183.46 in.) |
| Width | 1795 mm (70.67 in.) |
| Width including mirrors | 2028 mm (79.84 in.) |
| Height | 1440 mm (56.69 in.) |
| Wheelbase | 2725 mm (107.28 in.) |
| Drivetrain Architecture | Front wheel drive, Internal Combustion engine |
| Number of gears and type of gearbox | 6 gears, automatic transmission |
| Assisting systems | ABS (Anti-lock braking system) |
| Tires size | 205/60 R16; 215/45 R18 |
| Wheel rims size | 16; 18 |
Powertrain & Engine Architecture
At the heart of the Mazda 3 IV Sedan 2.5 SkyActiv-G was the P5-VPS engine, a 2.5-liter inline-four cylinder gasoline engine. This engine is a cornerstone of Mazda’s SkyActiv technology, designed for high compression ratios (typically around 13:1) to improve thermal efficiency. The engine utilizes direct injection, precisely metering fuel into the combustion chamber for optimal combustion. The valvetrain employs dual overhead camshafts (DOHC) and four valves per cylinder, contributing to improved breathing and power output. The SkyActiv-Drive CDA automatic transmission is a six-speed unit with a torque converter. Unlike traditional automatic transmissions, the SkyActiv-Drive prioritizes quick, smooth shifts and a more direct feel, aiming to mimic the responsiveness of a manual gearbox. It achieves this through a sophisticated control system and optimized gear ratios.
Driving Characteristics
The 186 horsepower and 185.87 lb-ft of torque delivered by the 2.5-liter engine and SkyActiv-Drive transmission provided a balanced driving experience. While not as overtly sporty as the manual transmission equipped models, the automatic offered smooth acceleration and adequate power for everyday driving situations. The transmission’s programming favored efficiency, with higher gears engaged quickly to conserve fuel. However, it could readily downshift when needed for passing maneuvers or climbing hills. Compared to the lower-powered 2.0-liter engine option, the 2.5-liter provided noticeably more robust acceleration. It didn’t quite match the performance of the turbocharged variants available in some markets, but offered a more refined and fuel-efficient alternative. The gear ratios were tuned for a blend of acceleration and highway cruising, providing comfortable operation at typical interstate speeds.
Equipment & Trim Levels
The 2.5 SkyActiv-G automatic variant typically came standard with features such as Mazda’s infotainment system with a 8.8-inch display, Bluetooth connectivity, Apple CarPlay and Android Auto integration, and a suite of safety features including automatic emergency braking, lane departure warning, and adaptive cruise control. Interior upholstery was generally cloth, with available upgrades to leatherette or genuine leather on higher trim levels. Dashboard configuration was consistent across the range, featuring a minimalist design with a focus on driver ergonomics. Optional extras included a premium sound system, a power sunroof, heated front seats, and a navigation system.
Chassis & Braking
The Mazda 3 IV Sedan utilized a front-wheel-drive platform with a MacPherson strut front suspension and a multi-link rear suspension. The suspension tuning was geared towards providing a comfortable ride while maintaining responsive handling. Braking systems varied depending on trim level, with lower trims typically equipped with front disc brakes and rear drum brakes, while higher trims featured disc brakes all around. Anti-lock braking system (ABS) was standard across the range. Stabilizer bars were fitted to both the front and rear axles to reduce body roll during cornering. The chassis was designed to be lightweight, contributing to improved fuel efficiency and handling.
Market Reception & Comparison
Critics generally praised the Mazda 3 IV Sedan 2.5 SkyActiv-G for its refined driving experience, stylish interior, and comprehensive suite of safety features. The automatic transmission received positive reviews for its smoothness and responsiveness, although some noted that it wasn’t as engaging as a manual gearbox. Fuel economy was competitive within the compact sedan segment, with the 2.5-liter engine achieving around 27 mpg in city driving and 36 mpg on the highway. Compared to other trims in the Mazda 3 lineup, the 2.5-liter automatic offered a good balance of performance and efficiency, making it a popular choice for buyers who prioritized comfort and convenience over outright sportiness. It often represented a step up in price and features compared to the base 2.0-liter model.
Legacy
The P5-VPS engine and SkyActiv-Drive transmission have proven to be relatively reliable powertrains. Common issues are generally minor, often related to routine maintenance items such as oil leaks or sensor failures. The engine’s direct injection system requires regular fuel system cleaning to prevent carbon buildup. On the used car market, the Mazda 3 IV Sedan 2.5 SkyActiv-G holds its value reasonably well, thanks to its reputation for reliability and its appealing driving dynamics. It remains a popular choice for buyers seeking a well-rounded and fuel-efficient compact sedan.
