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%.
QG family: QG13DE, QG15DE, QG16DE, QG18DE, QG18DD.
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 |
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, Primera 3 (P12) in 2001 – 2008;
- Nissan Sentra 5 (B15) in 2000 – 2006;
- Nissan Wingroad 2 (Y11) in 1999 – 2005.
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.
Frequently asked questions about the Nissan QG18DE
How much power does the Nissan QG18DE make?
The Nissan QG18DE develops 115 - 128 hp and 158 - 175 Nm of torque.
How much oil does the Nissan QG18DE take and which one?
Engine oil capacity: 2.7 liters. Recommended oil: 5W-30.
Does the Nissan QG18DE have a timing belt or chain?
The Nissan QG18DE uses a timing chain.
Is the Nissan QG18DE turbocharged?
No, the Nissan QG18DE is naturally aspirated.
Does the Nissan QG18DE need valve clearance adjustment?
Yes, there are no hydraulic lifters, so the valve clearances have to be checked and adjusted periodically.
How long does the Nissan QG18DE last?
The typical lifespan of the Nissan QG18DE is ~250 000 km with proper maintenance.
What is the fuel consumption of the Nissan QG18DE?
Nissan Primera 2005: city 9.6, highway 6.1, combined 7.4 L/100 km.
What cars was the Nissan QG18DE 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, Primera 3 (P12) in 2001 - 2008; Nissan Sentra 5 (B15) in 2000 - 2006 and 1 more (see the full list above).
What are the common problems of the Nissan QG18DE?
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. All known problems.
