The 1.6-liter diesel engine Renault-Nissan R9M or 1.6 dCi has been produced since 2011 and is installed on models such as Megane, Scenic, Espace, Koleos, as well as Qashqai and X-trail. On Mercedes cars, this diesel engine is known under its own indices OM622 and OM626.
R-series diesels also include: R9N.
In 2011, another diesel jointly developed by Renault-Nissan engineers was introduced. This is a 1.6-liter unit with a cast-iron block, a 16-valve head with hydraulic lifters, a timing chain drive and a Bosch Common Rail fuel system with piezo injectors. Also, this engine received a Start-Stop system and a variable displacement oil pump. In addition to the version with a single turbine for 130 hp, a Twin-Turbo modification for 160 hp was offered.
In 2014, derated versions of this engine for commercial vehicles appeared: modifications with a single turbine for 95 – 115 hp and with a twin turbocharger for 125 – 145 hp. They are still installed on minibuses Renault Trafic, Nissan NV300, Mercedes Vito, in contrast to the diesel for civilian models, which has already given way to the new R9N engine.
The engine was installed on:
- Renault Espace 5 (JFC) in 2015 – 2018;
- Renault Fluence 1 (L38) in 2012 – 2015;
- Renault Kadjar 1 (HA) in 2015 – 2018;
- Renault Koleos 2 (HC) in 2017 – 2018;
- Renault Megane 3 (X95) in 2012 – 2016; Megane 4 (XFB) in 2016 – 2018;
- Renault Scenic 3 (J95) in 2011 – 2016; Scenic 4 (JFA) in 2016 – 2018;
- Renault Talisman 1 (L2M) in 2015 – 2018;
- Renault Trafic 3 (X82) since 2014;
- Nissan NV300 X82 since 2016;
- Nissan Qashqai 1 (J10) in 2011 – 2013; Qashqai 2 (J11) in 2013 – 2018;
- Nissan X-Trail 3 (T32) in 2015 – 2018;
- Fiat Talento II (X82) since 2016;
- Opel Vivaro B (X82) in 2014 – 2018;
- Mercedes C-Class W205 in 2014 – 2018 (as OM622, OM626);
- Mercedes Vito W447 since 2014 (as OM622, OM626).
Specifications
| Production years | since 2011 |
| Displacement, cc | 1598 |
| Fuel system | Common Rail |
| Power output, hp | 130 (Single-Turbo) 160 (Twin-Turbo) 95 – 115 (Single-Turbo for minibuses) 125 – 145 (Twin-Turbo for minibuses) |
| Torque output, Nm | 320 (Single-Turbo) 380 (Twin-Turbo) 260 – 300 (Single-Turbo for minibuses) 320 – 340 (Twin-Turbo for minibuses) |
| Cylinder block | cast iron R4 |
| Block head | aluminum 16v |
| Cylinder bore, mm | 80 |
| Piston stroke, mm | 79.5 |
| Compression ratio | 15.4 |
| Hydraulic lifters | yes |
| Timing drive | chain |
| Turbocharging | yes |
| Recommended engine oil | 5W-30 |
| Engine oil capacity, liter | 6.5 |
| Fuel type | diesel |
| Euro standards | EURO 5/6 |
| Fuel consumption, L/100 km (for Renault Scenic 2014) — city — highway — combined |
5.2 4.1 4.5 |
| Engine lifespan, km | ~400 000 |
| Weight, kg | 177 |
Disadvantages of the Renault R9M engine
- The most frequent calls of owners to the service are associated with the vagaries of piezo injectors, the rapid contamination of the EGR valve, of which there are two at once, as well as a particulate filter.
- On specialized forums, many cases of cranking of liners for 150,000 km are described, but this only applies to modifications of a motor with two turbines with a capacity of 160 hp.
- The gas distribution mechanism here is chain and is designed for the entire life of the engine. However, on the forums you can find a lot of reviews about stretching the chain even up to 150,000 km.
- On some Renault models, the heat exchanger in the EGR system often fails, it simply stops passing exhaust gases and they then seep into the passenger compartment.
- For diesel engines with twin turbocharging, a recall campaign was carried out to replace the exhaust pipe on the EGR valve, which sometimes burst here.
- Often there are oil leaks from under the timing chain cover or oil filter housing.
