Mazda 1.5 SkyActiv-G Engine Specs, Problems, and Reliability. The SkyActiv-G 1.5-liter engine (P5-VPS, P5-VP (RS)) is a smaller sized version of the 2.0-litre engine in the SkyActiv series. This smaller displacement unit was first offered in the Mzzda2 and Mazda3, and after that in the MX-5 models. The P5-VP (RS) engine is for Mazda MX-5 ND design. Mazda has actually tried not to lose all the advantages of the brand-new engine and at the same time to achieve high performance in fuel economy.
The SkyActiv 1.5 engine has a little, lightweight aluminum cylinder block with minimized bores and stroke to accomplish a capacity of 1496 cc. There is a more common cast iron crankshaft inside, however all MX-5 engines have a more tough steel crankshaft to hold greater RPMs (redline is 7500 rpm). An aluminum cylinder head of the 1.5 engine has the exact same SkyActiv design as the 2.0 and 2.5 engines: two overhead chain-driven camshafts, four valves per cylinder by means of roller rocker arms, Dual Consecutive Valve Timing system (or Dual S-VT). The high-presser fuel pump has attached the head and driven by exhaust camshaft.
The 1.5 SkyActiv-G engine likewise has direct fuel injection system. There are private electronically controlled six-hole injectors inject fuel directly into the cylinders. The engine has distinct shape intake ports for generating a vortex effect within the combustion chamber. This impact offers a much better and consistent air-fuel mix, more efficient combustion and operation. The exhaust gases leave through a 4-2-1 header with long runners. All engine of SkyActiv series feature by the 4-2-1 exhaust system.
The modern Mazda’s SkyActiv innovation significantly enhanced dynamic efficiency and fuel performance of the 1.5 SkyActiv-G over the previous MZR 1.5-liter engine.
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1.5 SkyActiv-G Engine Problems and Reliability
The 1.5 SkyActiv-G engines are little, reliable engine by the contemporary standards. The mileage of 100,000 miles is easy going. There are a couple of things which can occur to this engine. Spark plugs do not run for long on this engine. There were also breakages of ignition coils which are quite costly. These breakages often occur due to low-quality fuel. Another common report for SkyActiv engines is about increasing oil level. That triggered by penetration of gasoline into the oil. Official dealers and Mazda service frequently refer to incorrect exploitation.
Mazda 1.5 SkyActiv-G Engine Modifications
P5-VP (RS) – 131 hp (96 kW)/ 7,000 rpm, 111 lb-ft (150 Nm)/ 4,800 rpm, – unique variation for Mazda MX-5 model. This engine has the steel crankshaft as was discussed early, lightweight rotating parts and different camera timing. With these modifications, the engine redline raised to 7500 rpm. The intake system is various. It consists of a variable length consumption manifold to increase power and torque by decreasing the length at high engine speeds.
you must see more engine detail in here: Engine – US Cars News or you can see on wiki here
Mazda 1.5 SkyActiv-G Engine Specs
| Manufacturer | Mazda |
| Production years | 2014-present |
| Cylinder block material | Aluminum |
| Cylinder head material | Aluminum |
| Fuel type | Gasoline |
| Fuel system | Direct fuel injection |
| Configuration | Inline |
| Number of cylinders | 4 |
| Valves per cylinder | 4 |
| Valvetrain layout | DOHC |
| Bore, mm | 74.5 (2.93 in) |
| Stroke, mm | 85.8 (3.38 in) |
| Displacement, cc | 1,496 cc (91.2 cu in) |
| Type of internal combustion engine | Four-stroke, naturally aspirated |
| Compression Ratio | 14.0:1 (13.0:1) |
| Power, hp | 114 hp (85kW)/ 6,000 |
| Torque, lb ft | 111 lb-ft (150 Nm)/ 4,000 |
| Engine weight | – |
| Firing order | 1-3-4-2 |
| Engine oil weight | SAE 5W-30, 5W-20; SAE 0W-20 (USA, Canada) |
| Engine oil capacity, liter | 4.3 (0.2- oil filter) |
| Oil change interval, mile | 12,000 (20,000 km)/12 months |
| Applications | Mazda2 (Demio), Mazda3, Mazda MX-5 |
