The Mazda 3 IV Sedan 2.0 e-SkyActiv-X (186 Hp) represents a significant step forward in Mazda’s engineering, introduced for the 2021 model year as part of the fourth generation (BP) Mazda 3. This variant, built on the 1HX platform, distinguishes itself through its innovative e-SkyActiv-X engine technology, a mild-hybrid system, and a focus on both performance and fuel efficiency. Positioned as a mid-range offering within the Mazda 3 sedan lineup, it aimed to bridge the gap between more affordable base models and the higher-performance trims. The e-SkyActiv-X engine was a key component of Mazda’s strategy to offer compelling alternatives to traditional gasoline engines, emphasizing a unique combustion process for improved efficiency.
Technical Specifications
| Brand | Mazda |
| Model | 3 |
| Generation | IV Sedan |
| Type (Engine) | 2.0 e-SkyActiv-X (186 Hp) |
| Start of production | 2021 |
| Powertrain Architecture | MHEV (Mild Hybrid Electric Vehicle) |
| Body type | Sedan |
| Seats | 5 |
| Doors | 4 |
| Fuel consumption at Low speed (WLTP) | 6.4-6.5 l/100 km (36.8 – 36.2 US mpg) |
| Fuel consumption at Medium speed (WLTP) | 5.1-5.2 l/100 km (46.1 – 45.2 US mpg) |
| Fuel consumption at high speed (WLTP) | 4.5-4.6 l/100 km (52.3 – 51.1 US mpg) |
| Fuel consumption at very high speed (WLTP) | 5.2-5.4 l/100 km (45.2 – 43.6 US mpg) |
| Combined fuel consumption (WLTP) | 5.1-5.2 l/100 km (46.1 – 45.2 US mpg) |
| CO2 emissions (WLTP) | 114-118 g/km |
| Fuel consumption (economy) – urban | 5.5-5.6 l/100 km (42.8 – 42 US mpg) |
| Fuel consumption (economy) – extra urban | 4-4.1 l/100 km (58.8 – 57.4 US mpg) |
| Fuel consumption (economy) – combined | 4.5-4.6 l/100 km (52.3 – 51.1 US mpg) |
| CO2 emissions | 101-104 g/km |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 8.1 sec |
| Acceleration 0 – 62 mph | 8.1 sec |
| Acceleration 0 – 60 mph | 7.7 sec |
| Maximum speed | 216 km/h (134.22 mph) |
| Emission standard | Euro 6d-ISC-FCM |
| Weight-to-power ratio | 7.1 kg/Hp |
| Weight-to-torque ratio | 5.5 kg/Nm |
| Power | 186 Hp @ 6000 rpm |
| Torque | 240 Nm @ 4000 rpm (177.01 lb.-ft. @ 4000 rpm) |
| Engine layout | Front, Transverse |
| Engine displacement | 1998 cm3 (121.93 cu. in.) |
| Number of cylinders | 4 |
| Engine configuration | Inline |
| Cylinder Bore | 83.5 mm (3.29 in.) |
| Piston Stroke | 91.2 mm (3.59 in.) |
| Compression ratio | 15:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Direct injection |
| Engine aspiration | Naturally aspirated |
| Engine oil capacity | 4.4 l (4.65 US qt | 3.87 UK qt) |
| Coolant | 7 l (7.4 US qt | 6.16 UK qt) |
| Kerb Weight | 1320-1405 kg (2910.1 – 3097.49 lbs.) |
| Max. weight | 1938 kg (4272.56 lbs.) |
| Max load | 533-618 kg (1175.06 – 1362.46 lbs.) |
| Trunk (boot) space – minimum | 450 l (15.89 cu. ft.) |
| Trunk (boot) space – maximum | 1138 l (40.19 cu. ft.) |
| Fuel tank capacity | 51 l (13.47 US gal | 11.22 UK gal) |
| Max. roof load | 75 kg (165.35 lbs.) |
| Permitted trailer load with brakes (8%) | 1300 kg (2866.01 lbs.) |
| Permitted trailer load with brakes (12%) | 1300 kg (2866.01 lbs.) |
| Permitted trailer load without brakes | 600 kg (1322.77 lbs.) |
| Permitted towbar download | 75 kg (165.35 lbs.) |
| 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.) |
| Ride height (ground clearance) | 135 mm (5.31 in.) |
| Minimum turning circle | 10.6 m (34.78 ft.) |
| Drivetrain Architecture | ICE to Front Wheels, MHEV |
| Drive wheel | Front wheel drive |
| Number of gears | 6 |
| Type of gearbox | Manual transmission |
| Front suspension | Independent type McPherson |
| Rear suspension | Torsion |
| Front brakes | Disc |
| Rear brakes | Disc |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Electric |
| Tires size | 205/60 R16; 215/45 R18 |
| Wheel rims size | 16; 18 |
Powertrain & Engine Architecture
The heart of the Mazda 3 2.0 e-SkyActiv-X is the PE-VPH engine, a 2.0-liter inline-four cylinder gasoline engine. What sets this engine apart is its unique combustion method, utilizing Homogeneous Charge Compression Ignition (HCCI). Unlike traditional spark-ignition engines, the e-SkyActiv-X relies on compressing the air-fuel mixture to the point of auto-ignition, resulting in a more complete and efficient burn. This is achieved through a combination of high compression ratios (15:1), precise fuel injection, and a specially designed combustion chamber. The mild-hybrid system, consisting of a 24V electric motor and a small battery, provides assistance during acceleration and enables start-stop functionality, further enhancing fuel economy. The engine employs direct injection and features a variable valve timing system for optimized performance across the rev range.
Driving Characteristics
The 186 hp and 177 lb-ft of torque delivered by the e-SkyActiv-X engine, coupled with the six-speed manual transmission, provides a balanced driving experience. Acceleration from 0-60 mph takes approximately 7.7 seconds, and the car reaches a top speed of 134 mph. While not as overtly sporty as some of its competitors, the e-SkyActiv-X offers a smooth and responsive power delivery. The HCCI combustion process contributes to a linear power curve, making it easy to modulate throttle inputs. Compared to the base 2.5-liter naturally aspirated engine, the 2.0 e-SkyActiv-X prioritizes fuel efficiency without sacrificing a significant amount of performance. The manual transmission provides engaging control, although some drivers may find the clutch engagement slightly heavier than in other vehicles.
Equipment & Trim Levels
The 2.0 e-SkyActiv-X trim typically included standard features such as Mazda’s i-Activsense safety suite (including adaptive cruise control, lane departure warning, and automatic emergency braking), a 8.8-inch infotainment display with Mazda Connect, Apple CarPlay and Android Auto integration, and a leather-wrapped steering wheel. Interior upholstery was generally cloth, with available upgrades to leatherette or full leather. Optional extras included a premium audio system, a power sunroof, and heated front seats. The overall interior design emphasized a minimalist aesthetic with high-quality materials and a driver-focused layout.
Chassis & Braking
The Mazda 3 IV Sedan utilizes a front-wheel-drive platform with independent McPherson strut suspension in the front and a torsion beam setup in the rear. This configuration provides a good balance between ride comfort and handling precision. Disc brakes are standard on all four wheels, providing adequate stopping power. The steering is electrically assisted, offering a responsive and precise feel. The chassis is relatively lightweight, contributing to the car’s agility and fuel efficiency. Stabilizer bars are included both front and rear to minimize body roll during cornering.
Market Reception & Comparison
The Mazda 3 2.0 e-SkyActiv-X received generally positive reviews from automotive critics. It was praised for its innovative engine technology, fuel efficiency, and refined driving experience. However, some reviewers noted that the HCCI combustion process could be sensitive to fuel quality and that the engine’s performance wasn’t dramatically different from traditional gasoline engines. Compared to other trims in the Mazda 3 lineup, the 2.0 e-SkyActiv-X offered a compelling alternative for drivers prioritizing fuel economy and a unique driving experience. It positioned itself between the more affordable 2.5-liter models and the higher-performance turbocharged variants.
Legacy
The Mazda 3 2.0 e-SkyActiv-X represents a bold step in Mazda’s pursuit of innovative engine technology. While the HCCI combustion process proved complex to implement consistently, it demonstrated Mazda’s commitment to pushing the boundaries of internal combustion engine design. On the used car market, these models are generally well-regarded for their reliability and fuel efficiency. However, potential buyers should be aware of the importance of using high-quality fuel to ensure optimal engine performance and longevity. The e-SkyActiv-X engine has laid the groundwork for future Mazda powertrains, influencing the development of their next-generation engine technologies.
