Renault M5Mt engine
Engineers of the Renault auto concern, together with the designers of Nissan, have developed a new model of the power unit. In fact, the internal combustion engine is the twin brother of the famous Japanese MR16DDT engine.
Description
Another turbocharged engine, branded M5Mt, was first introduced in 2013 at the Tokyo Motor Show (Japan). The release was carried out at the Nissan Auto Global plant (Yokohama, Japan). Designed to equip popular models of Renault cars.
It is a 1,6-liter gasoline four-cylinder engine with a capacity of 150-205 hp. with a torque of 220-280 Nm, turbocharged.
Installed on Renault cars:
- Clio IV (2013-2018);
- Clio RS IV (2013-n/vr);
- Talisman I (2015-2018);
- Space V (2015-2017);
- Mégane IV (2016-2018);
- Kadjar I (2016-2018).
The motor is equipped with an aluminum cylinder block, sleeved. The cylinder head is also aluminum, with two camshafts and 16 valves. A phase regulator is installed on each shaft. Hydraulic lifters are not provided. Thermal valve clearances are manually adjusted by selecting tappets.
Timing chain drive. Resource - 200 thousand km.
Unlike the MR16DDT, it has a proprietary electronic throttle, some changes in the ignition system and its own ECU firmware.
Technical specifications
| Manufacturer | Renault Group |
| Engine volume, cm³ | 1618 |
| Power, hp from | 150-205 (200-220)* |
| Torque, Nm | 220-280 (240-280)* |
| Compression ratio | 9.5 |
| Cylinder block | aluminum |
| Number of cylinders | 4 |
| Cylinder head | aluminum |
| Cylinder diameter, mm | 79.7 |
| The piston stroke, mm | 81.1 |
| Number of valves per cylinder | 4 |
| Timing drive | chain |
| Hydraulic compensators | no |
| Turbocharging | turbine Mitsubishi |
| Camshaft adjuster | phase regulators |
| Fuel system | injector, direct injection |
| Fuel | gasoline AI-98 |
| Environmental standards | Euros 6 (5)* |
| Resource, outside. km | 210 |
| Location | transverse |
*values in parentheses are for RS sport modifications.
Reliability
About the reliability of the engine, the opinions of owners and employees of car services are not unambiguous. Some consider it a reliable unit, while others have a more modest assessment. The only thing the opponents agree on is that it is impossible to call the engine unreliable.
The whole problem of this motor lies in its increased demands on the fuels and lubricants used. Poor quality fuel, and even more so oil, is immediately manifested by the occurrence of various malfunctions.
The specific turbocharging system requires special attention.
But pleases such a nuance as the absence of maslozhora. For French internal combustion engines, this is already an achievement.
Thus, M5Mt occupies an intermediate position in the assessment of reliability between "reliable" and "not entirely reliable".
Weak spots
There are two weaknesses to highlight here. First, the fear of the cold. In cold weather, the crankcase gas line freezes and the throttle valve freezes over. Secondly, the timing chain resource is low. Stretching occurs to 80 thousand kilometers of the car. Not timely replacement leads to bending of the valves and failure of the phase regulators.
There are failures in the electrical part of the motor (failure of DMRV and DSN sensors).
The throttle body is often clogged, which causes the engine to run erratically at idle.
Maintainability
The unit does not differ in high maintainability due to the aluminum cylinder block, the high cost of spare parts and the abundant amount of electronics.
Nevertheless, all car services are able to perform any work to restore the engine to working capacity.
Before repairing a non-working engine, you need to carefully calculate the possible costs. It may turn out that it will be much cheaper to purchase a contract ICE. Its average price is 50-60 thousand rubles.
General conclusion: the M5Mt power unit has proven to be reliable in cases of timely maintenance and the use of high-quality fuels and lubricants during operation. In this case, he nurses more than 350 thousand km. Otherwise, the reliability of the motor decreases along with the resource.
