The Mazda MX-5 (fourth generation, ND) facelift released in August 2018 introduced a new, smaller-displacement engine option: the 1.5-liter SkyActiv-G producing 132 horsepower. This variant was primarily aimed at markets seeking lower running costs and accessibility, particularly in Europe and Japan, while still retaining the core MX-5 driving experience. Production continued through 2023. The 1.5L model occupied the entry-level position in the ND MX-5 lineup, slotting below the more powerful 2.0-liter variants.
Technical Specifications
| Brand | Mazda |
| Model | MX-5 |
| Generation | MX-5 IV (ND, facelift 2018) |
| Type (Engine) | 1.5 SkyActiv-G (132 Hp) |
| Start of production | August, 2018 |
| End of production | 2023 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Roadster |
| Seats | 2 |
| Doors | 2 |
| Combined fuel consumption (WLTP) | 6.3 l/100 km (37.3 US mpg, 44.8 UK mpg, 15.9 km/l) |
| CO2 emissions (WLTP) | 142 g/km |
| Fuel consumption (urban) | 7.4 l/100 km (31.8 US mpg, 38.2 UK mpg, 13.5 km/l) |
| Fuel consumption (extra urban) | 5.3 l/100 km (44.4 US mpg, 53.3 UK mpg, 18.9 km/l) |
| Fuel consumption (combined) | 6.1 l/100 km (38.6 US mpg, 46.3 UK mpg, 16.4 km/l) |
| CO2 emissions | 138 g/km |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 8.3 sec |
| Acceleration 0 – 62 mph | 8.3 sec |
| Acceleration 0 – 60 mph | 7.9 sec |
| Maximum speed | 204 km/h (126.76 mph) |
| Emission standard | Euro 6d-ISC-FCM |
| Weight-to-power ratio | 7.6 kg/Hp, 132 Hp/tonne |
| Weight-to-torque ratio | 6.6 kg/Nm, 152 Nm/tonne |
| Power | 132 Hp @ 7000 rpm |
| Power per litre | 88.2 Hp/l |
| Torque | 152 Nm @ 4500 rpm (112.11 lb.-ft. @ 4500 rpm) |
| Engine layout | Front, Longitudinal |
| Engine displacement | 1496 cm3 (91.29 cu. in.) |
| Number of cylinders | 4 |
| Engine configuration | Inline |
| Cylinder Bore | 74.5 mm (2.93 in.) |
| Piston Stroke | 85.8 mm (3.38 in.) |
| Compression ratio | 13:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Direct injection |
| Engine aspiration | Naturally aspirated engine |
| Valvetrain | DOHC |
| Engine oil capacity | 4.3 l (4.54 US qt | 3.78 UK qt) |
| Coolant | 5.6 l (5.92 US qt | 4.93 UK qt) |
| Kerb Weight | 1000 kg (2204.62 lbs.) |
| Max. weight | 1230 kg (2711.69 lbs.) |
| Max load | 230 kg (507.06 lbs.) |
| Trunk (boot) space – minimum | 130 l (4.59 cu. ft.) |
| Fuel tank capacity | 45 l (11.89 US gal | 9.9 UK gal) |
| Length | 3915 mm (154.13 in.) |
| Width | 1735 mm (68.31 in.) |
| Width including mirrors | 1918 mm (75.51 in.) |
| Height | 1225 mm (48.23 in.) |
| Wheelbase | 2310 mm (90.94 in.) |
| Front track | 1495 mm (58.86 in.) |
| Rear (Back) track | 1505 mm (59.25 in.) |
| Ride height (ground clearance) | 125 mm (4.92 in.) |
| Minimum turning circle | 9.4 m (30.84 ft.) |
| Drivetrain Architecture | Rear wheel drive |
| Drive wheel | Rear wheel drive |
| Number of gears and type of gearbox | 6 gears, manual transmission |
| Front suspension | Double wishbone |
| Rear suspension | Independent multi-link spring suspension with stabilizer |
| Front brakes | Ventilated discs |
| Rear brakes | Disc |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Electric Steering |
INTRODUCTION
The 1.5-liter SkyActiv-G engine in the ND MX-5 facelift represented a strategic move by Mazda to broaden the appeal of their iconic roadster. Introduced in 2018, this engine offered a more economical and accessible entry point into MX-5 ownership, particularly in regions with high vehicle taxation based on engine displacement. The ND generation (2015-present) is known for its lightweight design and focus on driving pleasure, and the 1.5L variant continued this tradition, albeit with a slightly different character than its 2.0-liter siblings. This version was sold alongside the 2.0L engine throughout the ND’s lifecycle.
Powertrain & Engine Architecture
The 1.5-liter SkyActiv-G engine (designated as the ND01 engine code) is a naturally aspirated, inline-four cylinder engine. It features direct injection, a high compression ratio of 13:1, and a double overhead camshaft (DOHC) valvetrain. Mazda’s SkyActiv technology focuses on maximizing combustion efficiency, resulting in improved fuel economy and reduced emissions. The engine utilizes a 74.5mm bore and 85.8mm stroke. The 1.5L engine was paired with either a six-speed manual or a six-speed automatic transmission. The automatic transmission is a conventional torque-converter type, optimized for smooth shifts and fuel efficiency rather than outright performance.
Driving Characteristics
The 132 horsepower and 152 Nm (112 lb-ft) of torque produced by the 1.5-liter engine deliver a different driving experience compared to the 2.0-liter MX-5. While the 2.0L offers more immediate and substantial acceleration, the 1.5L provides a more relaxed and accessible power delivery. The automatic transmission, while smooth, does slightly diminish the sense of connection and control that the manual gearbox provides. Acceleration from 0-60 mph takes approximately 7.9 seconds, slightly slower than the manual version and the 2.0L models. The gear ratios in the automatic transmission are tuned for fuel efficiency, meaning the engine may need to rev higher to achieve brisk acceleration. However, the lighter weight of the 1.5L variant (around 1000kg/2204lbs) helps to mitigate the power deficit, maintaining a nimble and engaging driving feel.
Equipment & Trim Levels
The 1.5-liter MX-5 typically came equipped with a standard level of features, including air conditioning, power windows and locks, a basic infotainment system with a 7-inch touchscreen display, and Mazda’s i-Activsense safety suite (including features like lane departure warning and automatic emergency braking). Interior upholstery was typically cloth, with options for leather available as upgrades. Trim levels varied by market, but generally included options for alloy wheels, a premium sound system, and keyless entry. The 1.5L models were often positioned as the base trim, with the 2.0L variants offering more luxurious appointments and advanced technology.
Chassis & Braking
The ND MX-5, regardless of engine choice, features a lightweight chassis with a double wishbone front suspension and an independent multi-link rear suspension. The 1.5L variant utilizes ventilated discs on the front and solid discs on the rear. The braking system is assisted by ABS (Anti-lock Braking System). The suspension tuning is generally similar across all ND MX-5 models, prioritizing handling and responsiveness. Stabilizer bars are fitted to both the front and rear axles to reduce body roll during cornering.
Market Reception & Comparison
The 1.5-liter MX-5 was generally well-received by critics as an accessible and enjoyable entry point into the MX-5 family. It was praised for its fuel efficiency and nimble handling, although some reviewers noted the lack of outright power compared to the 2.0-liter models. Compared to the 2.0-liter MX-5, the 1.5L offered better fuel economy (around 6.3 l/100km combined) and a lower purchase price. However, the 2.0L provided significantly more performance and a more engaging driving experience. The 1.5L was often seen as a good choice for drivers who prioritize fuel economy and everyday usability over outright speed.
Legacy
The 1.5-liter SkyActiv-G engine proved to be a reliable and durable powertrain. The ND MX-5, in general, has a strong reputation for reliability, and the 1.5L variant is no exception. On the used car market, the 1.5L MX-5 represents a relatively affordable way to experience the joy of owning a Mazda roadster. Its lower running costs and accessible price point make it an attractive option for first-time roadster buyers or those seeking a fun and economical daily driver. The engine’s simplicity and robust design contribute to its long-term durability, making it a viable option for years to come.
