The 1.8-liter Nissan QG18DE engine (or QG18 for short) was produced at the company’s factories from 1998 to 2006 and was installed on the company’s mid-size models, such as Almera, Primera and others. The power unit had a 105 hp gas version. under its own index QG18DEN.
QG18DE engine was used in Nissan vehicles with high torque at low revs. Such an engine is considered very economical – fuel consumption is fixed at about 7 liters per 100 km, and 97% of the torque is produced by it in a low range of 2400-4800 rpm. Environmental cleanliness and low toxicity is ensured by a special design of the piston crown with a neutralizer surface of up to 50%.
The QG family also includes internal combustion engines: QG13DE, QG15DE, QG16DE and QG18DD.
The engine was installed on:
- Nissan Almera 2 (N16) in 2000 – 2006;
- Nissan Almera Tino 1 (V10) in 2000 – 2006;
- Nissan Avenir 2 (W11) in 1998 – 2005;
- Nissan Bluebird Sylphy N16 in 2000 – 2006;
- Nissan Primera 2 (P11) in 1998 – 2002;
- Nissan Primera 3 (P12) in 2001 – 2008;
- Nissan Sentra 5 (B15) in 2000 – 2006;
- Nissan Wingroad 2 (Y11) in 1999 – 2005.
Specifications
| Production years | 1998-2006 |
| Displacement, cc | 1769 |
| Fuel system | distributed injection |
| Power output, hp | 115 – 128 |
| Torque output, Nm | 158 – 175 |
| Cylinder block | cast iron R4 |
| Block head | aluminum 16v |
| Cylinder bore, mm | 80 |
| Piston stroke, mm | 88 |
| Compression ratio | 9.5 – 10 |
| Features | EGR |
| Hydraulic lifters | no |
| Timing drive | chain |
| Phase regulator | at the N-VCT inlet |
| Turbocharging | no |
| Recommended engine oil | 5W-30 |
| Engine oil capacity, liter | 2.7 |
| Fuel type | petrol |
| Euro standards | EURO 3/4 |
| Fuel consumption, L/100 km (for Nissan Primera 2005) — city — highway — combined |
9.6 6.1 7.4 |
| Engine lifespan, km | ~250 000 |
| Weight, kg | 138 |
Disadvantages of the QG18DE engine
- The timing chain delivers the most problems, often it rings already at 100,000 km;
- Next come complaints about oil consumption, which can start even at low mileage;
- Antifreeze leaks through the idle valve gasket directly to the ECU;
- For smooth operation of the motor, it is required to periodically clean the throttle and the EGR valve;
- The network describes cases of destruction of the catalyst with the tightening of the crumbs into the cylinder.
