The Mazda 3 III Hatchback (BM) 2.5 SkyActiv-G, produced from July 2014 to 2016, represents a significant iteration in Mazda’s compact car lineage. This variant, powered by the PY-VPS 2.5-liter naturally aspirated engine producing 184 horsepower, occupied a mid-to-upper position within the third-generation Mazda 3 (BM) lineup. It was positioned above the 2.0-liter SkyActiv-G models and served as a more performance-oriented alternative to the diesel options available in European markets. The BM generation marked a shift towards Mazda’s “Kodo – Soul of Motion” design philosophy and a greater emphasis on driving dynamics, and the 2.5L model exemplified these goals.
Technical Specifications
| Brand | Mazda |
| Model | 3 |
| Generation | 3 III Hatchback (BM) |
| Type (Engine) | 2.5 SkyActiv-G (184 Hp) |
| Start of production | July, 2014 |
| End of production | 2016 |
| 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 consumption (combined) | 8.1 l/100 km (29 US mpg) |
| Fuel Type | Petrol (Gasoline) |
| Maximum speed | 210 km/h (130.49 mph) |
| Emission standard | ULEV |
| Weight-to-power ratio | 7.3 kg/Hp |
| Weight-to-torque ratio | 5.4 kg/Nm |
| Power | 184 Hp @ 5700 rpm |
| Torque | 251 Nm @ 3250 rpm (185.13 lb.-ft. @ 3250 rpm) |
| Maximum engine speed | 6500 rpm |
| Engine layout | Front, Transverse |
| Engine Model/Code | PY-VPS |
| 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.) |
| Compression ratio | 13:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Direct injection |
| Engine aspiration | Naturally aspirated engine |
| Valvetrain | DOHC, VVT |
| Engine oil capacity | 4.5 l (4.76 US qt | 3.96 UK qt) |
| Coolant capacity | 6.8 l (7.19 US qt | 5.98 UK qt) |
| Kerb Weight | 1351 kg (2978.45 lbs.) |
| Trunk (boot) space – minimum | 572 l (20.2 cu. ft.) |
| Trunk (boot) space – maximum | 1334 l (47.11 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 | 1455 mm (57.28 in.) |
| Wheelbase | 2700 mm (106.3 in.) |
| Front track | 1555 mm (61.22 in.) |
| Rear track | 1560 mm (61.42 in.) |
| Ride height (ground clearance) | 155 mm (6.1 in.) |
| Drag coefficient (Cd) | 0.28 |
| Minimum turning circle | 11.3 m (37.07 ft.) |
| Drivetrain | Front wheel drive |
| Number of gears | 6 gears, manual transmission |
| Front suspension | Independent, type McPherson with coil spring and anti-roll bar |
| Rear suspension | Independent multi-link spring suspension with stabilizer |
| Front brakes | Ventilated discs, 295 mm |
| Rear brakes | Disc, 265 mm |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Electric Steering |
| Tires size | 215/45 R18 |
| Wheel rims size | 7J x 18 |
INTRODUCTION
The Mazda 3 BM series, launched in 2014, represented a significant leap forward for the brand, moving away from the more conservative designs of previous generations. The 2.5-liter SkyActiv-G engine variant was a key component of this strategy, offering a compelling blend of performance and efficiency. Built on the 1HX0/A3 platform, the BM generation aimed to appeal to a broader audience while retaining Mazda’s reputation for engaging driving dynamics. This particular engine and transmission combination was primarily sold in North America and select markets where larger displacement engines were preferred.
Powertrain & Engine Architecture
The heart of this Mazda 3 is the PY-VPS 2.5-liter inline-four cylinder engine, a cornerstone of Mazda’s SkyActiv technology. This engine is characterized by its high compression ratio of 13:1, achieved through meticulous engineering and optimized combustion chamber design. It utilizes direct injection, maximizing fuel atomization and improving efficiency. The engine also features a dual overhead camshaft (DOHC) valvetrain with variable valve timing (VVT) on both intake and exhaust camshafts, allowing for optimized performance across the rev range. The 2.5L engine was paired with a six-speed manual transmission in this configuration. This transmission was chosen for its precise shift feel and ability to handle the engine’s output effectively. The engine’s design prioritizes torque delivery, making it responsive in everyday driving situations.
Driving Characteristics
The 2.5-liter SkyActiv-G engine in the Mazda 3 BM delivers a noticeably more spirited driving experience compared to the 2.0-liter variants. With 184 horsepower and 185 lb-ft of torque, acceleration is brisk, and the engine feels confident during highway merging and overtaking maneuvers. The six-speed manual transmission allows drivers to fully exploit the engine’s powerband, providing precise control and engaging gear changes. While not a sports car, the 2.5L Mazda 3 offers a level of responsiveness and driver involvement that sets it apart from many competitors in the compact segment. The gear ratios are well-matched to the engine’s characteristics, providing strong acceleration in lower gears and comfortable cruising at highway speeds.
Equipment & Trim Levels
The 2.5 SkyActiv-G variant of the Mazda 3 BM was typically offered in higher trim levels, such as the ‘Grand Touring’ or equivalent. Standard features often included alloy wheels, a touchscreen infotainment system with Bluetooth connectivity, a rearview camera, and automatic climate control. Interior upholstery was typically cloth or leatherette, with higher trims offering full leather options. Optional extras included a premium sound system, navigation system, and advanced safety features like blind-spot monitoring and lane departure warning. The overall interior design emphasized a clean, minimalist aesthetic with a focus on driver ergonomics.
Chassis & Braking
The Mazda 3 BM features a McPherson strut front suspension and a multi-link rear suspension, providing a comfortable yet controlled ride. The suspension tuning was specifically calibrated to complement the increased power of the 2.5-liter engine, offering improved handling and stability. Braking duties are handled by ventilated discs at the front and solid discs at the rear. The braking system is equipped with ABS (Anti-lock Braking System) and electronic brake-force distribution, ensuring safe and effective stopping power. The chassis is relatively lightweight, contributing to the car’s agile handling characteristics.
Market Reception & Comparison
The Mazda 3 BM 2.5 SkyActiv-G was generally well-received by automotive critics, who praised its engaging driving dynamics, refined interior, and fuel efficiency. Compared to the 2.0-liter models, the 2.5L variant offered a significant performance upgrade without sacrificing fuel economy. It also provided a more compelling alternative to competitors like the Honda Civic and Toyota Corolla, which were often criticized for their less engaging driving experiences. Fuel economy figures were competitive, averaging around 29 US mpg in combined driving conditions. Reliability was also generally good, with few reported issues specific to the 2.5-liter engine or transmission.
Legacy
The PY-VPS 2.5-liter SkyActiv-G engine has proven to be a durable and reliable powerplant. In the used car market, Mazda 3 BM models equipped with this engine and manual transmission are highly sought after by enthusiasts who appreciate their driving dynamics and overall quality. While maintenance costs are generally reasonable, regular servicing is essential to ensure long-term reliability. The engine’s direct injection system requires periodic cleaning to prevent carbon buildup, and the timing chain should be inspected at recommended intervals. Overall, the Mazda 3 BM 2.5 SkyActiv-G remains a compelling choice for buyers seeking a fun-to-drive and reliable compact hatchback.
