The Mazda MX-5 (known as the Miata in North America) ND generation, launched in 2015, represented the fourth iteration of Mazda’s iconic lightweight roadster. The 1.5 SkyActiv-G variant, produced from 2015 to 2018, served as the entry point into the ND lineup, offering a balance of affordability, fuel efficiency, and the classic MX-5 driving experience. This model was primarily aimed at drivers seeking a fun, engaging sports car without the higher price tag and performance of the later 2.0-liter models. It was a key offering in markets where smaller displacement engines were favored, and it quickly gained popularity for its nimble handling and accessible price point.
Technical Specifications
| Brand | Mazda |
| Model | MX-5 |
| Generation | MX-5 IV (ND) |
| Type (Engine) | 1.5 SkyActiv-G (131 Hp) |
| Start of production | 2015 |
| End of production | 2018 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Roadster |
| Seats | 2 |
| Doors | 2 |
| Fuel consumption (urban) | 7.9 l/100 km (29.8 US mpg) |
| Fuel consumption (extra urban) | 4.9 l/100 km (48 US mpg) |
| Fuel consumption (combined) | 6 l/100 km (39.2 US mpg) |
| CO2 emissions | 139 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 6 |
| Weight-to-power ratio | 7.4 kg/Hp |
| Weight-to-torque ratio | 6.5 kg/Nm |
| Power | 131 Hp @ 7000 rpm |
| Torque | 150 Nm @ 4800 rpm (110.63 lb.-ft. @ 4800 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 oil capacity | 4.3 l (4.54 US qt | 3.78 UK qt) |
| Coolant capacity | 5.6 l (5.92 US qt | 4.93 UK qt) |
| Kerb Weight | 975 kg (2149.51 lbs.) |
| Max. weight | 1215 kg (2678.62 lbs.) |
| Max load | 240 kg (529.11 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 |
| Number of gears | 6 |
| Gearbox type | Manual transmission |
| Front brakes | Ventilated discs |
| Rear brakes | Disc |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Electric |
Introduction
The ND MX-5 1.5 SkyActiv-G was the initial offering in the fourth generation of Mazda’s legendary roadster. Production ran from 2015 to 2018, and it was built on the new NM platform, designed to be lighter and more rigid than its predecessor. This focus on weight reduction was central to the MX-5’s philosophy, and the 1.5-liter engine was chosen, in part, to keep the overall weight down. Positioned as the entry-level trim, it provided an accessible pathway to MX-5 ownership, emphasizing driving pleasure over outright speed. The ND generation marked a return to the original spirit of the first-generation MX-5 (NA), prioritizing a pure, connected driving experience.
Powertrain & Engine Architecture
At the heart of the MX-5 1.5 SkyActiv-G lies the PE-VPR inline-four cylinder engine. This 1496cc engine is a naturally aspirated powerplant featuring direct injection and a high compression ratio of 13:1. The SkyActiv technology suite, Mazda’s approach to improving engine efficiency, is fully implemented here. This includes optimized combustion chamber design, reduced internal friction, and a lightweight engine block. The engine utilizes a variable valve timing system on both intake and exhaust camshafts to optimize performance across the rev range. The 1.5L engine produces 131 horsepower at 7,000 rpm and 150 Nm (110.63 lb-ft) of torque at 4,800 rpm. The engine is mated to a six-speed manual transmission as standard, though a six-speed automatic transmission was also available. The automatic transmission is a conventional torque-converter type, tuned for smooth shifts and fuel efficiency rather than aggressive performance.
Driving Characteristics
The 1.5-liter engine, paired with the lightweight chassis, delivers a surprisingly engaging driving experience. While not as powerful as the later 2.0-liter variants, the 1.5L offers a more accessible powerband, making it easier to enjoy spirited driving on winding roads. The six-speed manual transmission provides precise shifts and allows the driver to fully exploit the engine’s capabilities. The automatic transmission, while smooth, does slightly diminish the sense of connection and responsiveness. The gear ratios are tuned to prioritize fuel economy and everyday usability, rather than outright acceleration. Acceleration from 0-60 mph takes around 7.9 seconds, which is respectable for a small roadster. The car truly shines in the corners, with its precise steering, well-balanced chassis, and minimal body roll. The relatively low weight contributes significantly to its nimble handling.
Equipment & Trim Levels
The MX-5 1.5 SkyActiv-G typically came equipped with standard features such as power windows and locks, air conditioning, a basic audio system with USB connectivity, and cloth upholstery. Safety features included ABS, stability control, and airbags. Higher trim levels, such as the ‘Sport’ or ‘Touring’ packages, added features like alloy wheels, a premium sound system, leather upholstery, and a limited-slip differential (on manual transmission models). Optional extras included a retractable hardtop, navigation system, and advanced safety features like blind-spot monitoring. The interior design was minimalist and driver-focused, with a clear instrument cluster and ergonomically placed controls.
Chassis & Braking
The ND MX-5 features a MacPherson strut front suspension and a multi-link rear suspension, optimized for handling and ride comfort. The suspension tuning is relatively firm, providing excellent body control but potentially feeling a bit harsh on rough roads. The 1.5L models typically used smaller diameter brakes compared to the 2.0L variants, with ventilated discs at the front and solid discs at the rear. ABS (Anti-lock Braking System) was standard. The steering system is a rack-and-pinion setup with electric power assistance, providing precise and responsive steering feel. The chassis is remarkably rigid for an open-top roadster, contributing to its excellent handling characteristics.
Market Reception & Comparison
The MX-5 1.5 SkyActiv-G was generally well-received by automotive critics. It was praised for its engaging driving dynamics, fuel efficiency, and affordability. Some critics noted that the 1.5-liter engine could feel a bit underpowered, especially when compared to the later 2.0-liter models. However, the majority agreed that the 1.5L offered a compelling package for drivers seeking a fun and accessible sports car. Compared to the 2.0-liter MX-5, the 1.5L offered better fuel economy and a slightly more forgiving power delivery, making it a good choice for everyday driving. The 1.5L also tended to be more affordable, both in terms of initial purchase price and ongoing maintenance costs.
Legacy
The Mazda MX-5 ND 1.5 SkyActiv-G has proven to be a reliable and durable powertrain. The SkyActiv engine is known for its longevity and relatively low maintenance requirements. On the used car market, these models remain popular due to their affordability and engaging driving experience. While the 2.0-liter variants command a higher price, the 1.5L offers a compelling value proposition for buyers seeking a fun and reliable roadster. The ND generation, as a whole, has cemented the MX-5’s reputation as one of the best driver’s cars available, and the 1.5L variant played a crucial role in making that experience accessible to a wider audience.
