Toyota M20A-FKS 2.0L Engine Specs, Problems, Reliability. The engine code M20A-FKS comes from a 2.0-liter inline 4-cylinder gasoline engine with combined port and direct injection. Toyota to start with introduced this new 2.0 L (the smallest power system in the Dynamic Force engine household) in 2018, 2 years after A25A-FKS release. The brand-new engine is presented as an option to the 1.8-liter 2ZR-FAE and 2.0-liter 3ZR-FAE engine, used in the Toyota Corolla, Auris, Rav4 and etc.
The M20A-FKS engine has the exact same design as a 2.5-liter version – A25A-FKS. The engine block is aluminum, open-deck type with sleeves cast straight in the cylinder block. Comparing to the A25A, the M20A has a smaller bore size by 7 mm and reduced stroke from 103.4 mm to 97.6 mm. The 2.0 L version likewise got brand-new tumble-maintaining shaped light-weight pistons with improved piston skirt surface boosting oil retention, and 3 oil jets for each piston supplying extra lubrication and cooling. Connecting rods are made from high strength steel.
The M20A has an aluminum cylinder head with 4 valves per cylinder and double overhead chain-driven camshafts. Intake side has laser-clad intake valve seats; the exhaust valve seats are pushed. The timing chain is a light-weight, single-row roller chain with a small pitch of 8 mm.
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Toyota M20A-FKS 2.0L Engine Specs, Problems, Reliability
Consumption and exhaust camshafts are put in a separate casing mounted on top of the cylinder head. Camshafts have the concave profile increasing valve lift amount. The engine is geared up with hydraulic tappets also. The engine also features the latest Toyota’s Double VVT-i, with VVT-iE (Variable Valve Timing-intelligence by Electric motor) on the intake side and basic VVT-i (with a standard hydraulic actuator which utilizes an oil pressure to manage variable timing) on the exhaust.
The M20A-FKS is equipped with Toyota’s D-4S fuel-injection system. It utilizes a combination of high-pressure direct-injection and low-pressure port fuel injection. The high-pressure six-hole fuel nozzles set up inside cylinder head injects fuel straight inside the combustion chamber of each cylinder. The port injection utilizes ten-hole low-pressure nozzles. The ECU decides which method of injection is more suitable and ideal based on driving conditions, loads, and rpm to optimize combustion.
The consumption system consists of Toyotas ETCS-i (electronic throttle control) and simple plastic intake manifold with no geometry modification gadgets. Ignition is the latest DIS-4 with private ignition coil for each cylinder. Instead of Denso FC16HR-Q8 in 2.5 L variation, this engine has FC20HR-Q8 spark plugs. To certified with Euro 6d, the engine was geared up with a particulate filter (GPF) comparable to DPF for diesel motor.
If you wish to find detailed information about all significant components and systems, read our full review on the A25A-FKS engine.
Toyota M20A-FKS 2.0L Engine Problems and Reliability
There is still not enough information available about the reliability of the M20A-FKS due to a short production and sales history. But surely, without brand-new technologies, it is difficult to achieve high fuel performance and high levels of emission requirements. In this case, the M20A-FKS engine has more intricate electronically controlled systems and expensive parts compare to previous engine households.
Also, it ought to be noted, that the cylinder block design, and even cylinder head with laser-clad valve seats, make it impossible to fix this engine or rebuild with an affordable spending plan – (this engine is kinda a one-off).
you must see more engine detail in here: Engine – US Cars News or you can see on wiki here
Toyota M20A-FKS 2.0L Engine Specs
| Manufacturer | Toyota Motor Corporation |
| Production years | 2018-present |
| Cylinder block material | Aluminum |
| Cylinder head material | Aluminum |
| Fuel type | Gasoline |
| Fuel system | Direct injection + port injection |
| Configuration | Inline |
| Number of cylinders | 4 |
| Valves per cylinder | 4 |
| Valvetrain layout | DOHC |
| Bore, mm | 80.5 mm (3.15 in) |
| Stroke, mm | 97.6 mm (3.84 in) |
| Displacement, cc | 1,987 cc (121.3 cu in) |
| Type of internal combustion engine | Four-stroke, naturally aspirated |
| Compression Ratio | 13.0:1 – M20A-FKS; 14.0:1 – M20A-FXS |
| Power, hp | 171-175 hp (127-130 kW)/ 6,600 |
| Torque, lb ft | 150-153 lb-ft (203-208 Nm)/4,300-4,400 |
| Engine weight | – |
| Firing order | 1-3-4-2 |
| Engine oil weight | SAE 0W-16, API SN/RC |
| Engine oil capacity, liter | 4.6 (4.8 qt) – with oil filter; 0.3 (0.4 qt) – oil filter capacity |
| Oil change interval, mile | 10,000 (15,000 km) / 12 months |
| Applications | Toyota Corolla/Corolla Hatchback, Toyota Rav4, Toyota Auris, Lexus UX 250h |
Toyota M20A-FKS 2.0L Engine Modifications
The M20A-FXS engine. This version is used for hybrid cars, such as the Lexus UX 250h. The M20A-FXS features increased compression ratio of 14.0:1 and Miller cycle mode. It produces 145 hp of power at 6,000 rpm and 133 lb-ft (180 Nm) of torque at 4,400 rpm.