Toyota 1NZ-FXE Engine: Specifications and technical data (2025)

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Toyota 1NZ-FXE is a 1.5 L (1,497 cc, 91.35 cubic inches) hybrid straight-four 4-stroke naturally aspirated gasoline engine from Toyota NZ-family.The 1NZ-FXE engine features a lightweight aluminum block and aluminum cylinder head with two overhead camshafts (DOHC) and four valves per cylinder (16 in total). Toyota described the 1NZ-FXE engine as having an “Atkinson cycle” since the compression stroke is shortened and the expansion stroke longer. The engine has a high physical compression ratio of 13.0:1, but the closing of the inlet valve is delayed, for an effective compression ratio of 9.5:1 Cylinder bore and piston stroke are 75.0 mm (2.95 in) and 84.7 mm (3.34 in), respectively.The engine produced 76 PS (56 kW; 75 HP) at 5,000 rpm of maximum horsepower and 110 Nm (11.2 kgm; 81.2 ft-lb) at 4,000 rpm of peak torque.

Engine code identification:

1 – 1-st generation engine
NZ – Engine family
F – Economy narrow-angle DOHC
X – Hybrid Atkinson cycle
E – Multi Point Fuel Injection

  • Toyota 1NZ-FXE Engine Specifications
  • Toyota 1NZ-FXE Engine Troubleshooting

GENERAL TECHNICAL DATA

Engine model ...................... Toyota 1NZ-FXE
Cylinder layout ...................... Four stroke, Inline-4 (Straight-4)
Fuel type ...................... Gasoline (petrol)
Year of production ...................... 1997-
Total displacement ...................... 1.5 L, 1,497 cm3 (91.35 cubic inches)
Fuel system ...................... Electronic Fuel Injection (EFI)
Power adder ...................... None
Maximum power ...................... 76 PS (56 kW; 75 HP) at 5,000 rpm
Maximum torque ...................... 110 Nm (11.2 kgm; 81.2 ft-lb) at 4,000 rpm
Firing order ...................... 1-3-4-2
Dimensions (L x W x H) ...................... No data available
Weight ...................... 87 kg (191.2 lbs)

CYLINDER BLOCK

The Toyota 1NZ-FXE has an aluminum cylinder block with five bearing support system and thin-walled cast-iron liners. It has a 75.0 mm (2.95 in) cylinder bore and 84.7 mm (3.33 in) piston stroke. The engine has two compression and single oil control ring.

Cylinder block alloy ...................... Aluminium
Compression ratio ...................... 13.0-13.5:1
Cylinder bore ...................... 75.0 mm (2.95 in)
Piston stroke ...................... 84.7 mm (3.34 in)
Number of piston rings (compression / oil) ...................... 2 / 1
Number of main bearings ...................... 5
Cylinder inner diameter (standard) ...................... 75.000-75.013 mm (2.9527-2.9528 in)
Piston skirt diameter (standard) ...................... 74.945-74.955 mm (2.9506-2.9510 in)
Piston pin outer diameter ...................... 18.001-18.004 mm (0.7087-0.7088 in)
Piston ring side clearance ...................... Top ...................... 0.020-0.070 mm (0.0008-0.0027 in)
Second ...................... 0.020-0.060 mm (0.0008-0.0024 in)
Oil ...................... 0.020-0.060 mm (0.0008-0.0024 in)
Piston ring end gap ...................... Top ...................... 0.20-0.30 mm (0.0079-0.0118 in)
Second ...................... 0.30-0.45 mm (0.0118-0.0177 in)
Oil ...................... 0.10-0.40 mm (0.0039-0.0158 in)
Crankshaft journal diameter ...................... 45.988-46.000 mm (1.8105-1.8110 in)
Crankpin diameter ...................... 39.992-40.000 mm (1.5745-1.5748 in)
Main bearing cap bolts tightening procedure and torque specs:

Step 1: 22 Nm; 2.2 kgm; 16.2 ft-lb
Step 2: Turn all bolts 90°
After securing bearing cap bolts, make sure crankshaft turns smoothly by hand.

Connecting rod bearing bolts

Step 1: 15 Nm; 1.5 kgm; 11 ft-lb
Step 2: Turn bolts 90°
Crankshaft pulley bolt

128 Nm; 13.0 kgm; 94.5 ft-lb

CYLINDER HEAD

Valve Arrangement ...................... DOHC, chain drive
Valves ...................... 16 (4 valves per cylinder)
Valve head diameter ...................... INTAKE ...................... 30.5 mm (1.20 in)
EXHAUST ...................... 25.5 mm (1.00 in)
Valve length ...................... INTAKE ...................... 89.25 mm (3.5138 in)
EXHAUST ...................... 87.90 mm (3.4606 in)
Valve stem diameter ...................... INTAKE ...................... 4.970-4.985 mm (0.1957-0.1963 in.)
EXHAUST ...................... 4.965-4.980 mm (0.1955-0.1961 in.)
Valve spring free length ...................... 59.77 mm (2.3531 in.)
Camshaft cam height ...................... INTAKE ......................
EXHAUST ...................... 44.046-44.146 mm (1.7341-1.7380 in.)
Outer camshaft journal diameter ...................... №1 ...................... 34.449-34.465 mm (1.3563-1.3569 in.)
Other journals diameter ...................... 22.949-22.965 mm (0.9035-0.9041 in.)
Head tightening procedure and torque specs:

Step 1: 29 Nm; 3.0 kgm; 22 ft-lb
Step 2: Turn all bolts 90°
Step 3: Turn all bolts another 90°
Camshaft timing sprocket

MAINTENANCE DATA

Valve clearance
Intake valve ...................... 0.17-0.23 mm (0.007-0.009 in)
Exhaust valve ...................... 0.27-0.33 mm (0.011-0.013 in)
Compression pressure
Standard ...................... 9.0 kg/m2 (128 psi)
Minimun ...................... 7.0 kg/m2 (99 psi)
Compression differential limit between cylinders ...................... 1.0 kg/m2 (14 psi)
Oil system
Oil consumption , L/1000 km (qt. per miles) ...................... up to 0.5 (1 qt. per 1200 miles)
Recommended engine oil ...................... 5W-30, 10W-30
Oil type API ...................... SJ or higher
Engine oil capacity (Refill capacity) ...................... With filter change 3.4 l
Without filter change 3,7 l
Oil change interval, km (miles) ...................... 5,000-10,000 (3,000-6,000)
Ignition system
Spark plug ...................... DENSO: SK16R11, NGK: IFR5A11
Spark plug gap ...................... 1.0-1.1 mm (0.039-0.043 in)

VEHICLE APPLICATIONS

Model ...................... Years Produced
Toyota Prius ...................... No data available
Toyota Prius C ...................... No data available
Toyota Yaris ...................... No data available
Toyota Corolla (Axio/Fielder) ...................... No data available
Toyota Sienta ...................... No data available

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Toyota 1NZ-FXE Engine: Specifications and technical data (2025)

FAQs

How much horsepower does a 1NZ-FXE engine have? ›

This combination makes the 1NZ-FXE suitable for use with the Hybrid Synergy Drive, where peak torque and power demands can be met by the electric motor and battery. Output is 57 kW (77 PS; 76 hp) at 5000 rpm with 115 N⋅m (85 lb⋅ft; 12 kg⋅m) of torque at 4000 rpm.

What is the best engine oil for a Toyota 1NZ-FE? ›

5W-30 (All TEMPS) - SAE 5W-30 is the best choice for good fuel economy and good starting in cold weather. If SAE 5W-30 is not available, SAE 10W-30 may be used. However, it must be replaced with SAE 5W-30 at the next oil change.

What is the difference between 1NZ-FE and 1NZ-FXE? ›

This engine was introduced in 1999 and has won several awards since, including a series of International Engine of the Year awards from 2000 onwards. The 1NZ-FXE appears in the Prius and Prius c. The 1NZ-FE is the low-compression, 1.5-liter Otto-cycle variant of the 1NZ-FXE with 107 horsepower and 103 lb-ft of torque.

Is 1NZ a good engine? ›

The 1NZ-FE/FXE Engine Problems and Reliability Toyota's 1.5L 1NZ engine is a typical modern engine. There are practically no problems with 1NZ-FE/FXE engines on mileages up to 100,000 miles. But after that line, be prepared for high oil consumption, which usually increases during long rides with high rpm.

Which engine is better, 1NZ or 2NZ? ›

To answer your question, I would stay with the 2NZ. A used 1NZ, which probably has zero service history, could end up consuming a LOT of oil, as high mileage 1NZs are well known for oil consumption when they have a lot of miles on them. You are much better off staying with the 2NZ.

What is the difference between 1NZ and 2NR? ›

To the layman, they were both 1.5-liter inline-four engines with an automatic. Nonetheless, key characteristic differences saw the earlier 1NZ-FE a little punchier with more low-down torque whereas the newer 2NR-FE was more economical in terms of fuel but at the expense of some power.

What are the recommended spark plugs for a 1nz engine? ›

Denso Fk16hr11 Spark Plug for Auris 1.5 Engine 1nz-Fe 90919-01243.

What synthetic oil does Toyota recommend? ›

Genuine Toyota motor oil 0W-20 utilizes a Toyota-specific additive package that will provide the best results for oil performance and fuel economy.

Is Mobil oil good for Toyota? ›

Tested against Toyota specifications

From the racetrack to the road, Mobil 1 motor oils are designed, tested and proven to deliver outstanding performance and protection for your Toyota engine. * Potential fuel economy improvement obtained by switching from higher viscosity oils to a lower viscosity grade.

What does Fe mean in Toyota engine? ›

For example, a 2GR-FE engine (used in the Avalon, RX 350, and Highlander) is a second-generation (2) engine in the GR-series featuring an economy narrow-angle valve direct overhead cam (F) with electronic fuel injection (E). The suffixes for Toyota engine naming are as follows: A - Valvematic variable lift intake head.

What is the firing order for a 1NZ-FXE? ›

General Information
Cylinders4
Displacement1NZ 1497cc 2NZ 1299cc
Firing Order1,3,4,2

What is the valve clearance of the 1NZ-FXE? ›

Valve clearance (Cold): Intake 0.17 to 0.23 mm (0.007 to 0.009 in.) Exhaust 0.27 to 0.33 mm (0.011 to 0.013 in.)

How to make 1NZ faster? ›

If you want some extra power with bolt on parts only, the general accepted list of mods will be:
  1. Cold Air Intake.
  2. Header.
  3. Cat-back exhaust (in you case it will have to be custom made) go for 2- 2.25" pipe diameter. ...
  4. Lightweight / underdrive crank pulley.
Mar 12, 2009

What is the most reliable Toyota engine of all time? ›

Without a doubt, the most reliable engine ever produced by Toyota has to be the 3B Diesel. These aren't powerhouse speed demons. However, the 3B (and other B Series engines built by Toyota and its subsidiaries) pushed out significant torque ratings at low RPMs.

What is the best engine oil for 1NZ? ›

Officially the Yaris calls for 5W30 with the option of using 10W30 in the summer or in a hot climate. Now that Toyota has adopted low viscosity motor oils across the board (for fuel economy reasons) they have revised their recommendations for the 1NZ-FE to also include 5W20 and 0W20.

How much HP does a 1FZ Fe have? ›

Toyota FZ engine
FZ engine
Fuel typePetrol
Cooling systemWater-cooled
Output
Power output190 hp (142 kW) (1FZ-F) 212 hp (158 kW) (1FZ-FE) 225 hp (168 kW) (1FZ-FE 1998-2009)
16 more rows

How much horsepower does a Toyota LR have? ›

Maximum power output is 560 PS (552 bhp; 412 kW) at 8,700 rpm.

How much horsepower does the S62 engine have? ›

The S62 was BMW's first V8 engine to have double-VANOS (variable valve timing on the intake and exhaust camshafts). The S62 engine produces 294 kW (400 PS; 394 hp) at 6600 rpm and 500 N⋅m (369 lb⋅ft) at 3800 rpm. The redline is 7000 rpm. The bore and stroke are 94 mm (3.7 in) and 89 mm (3.5 in) respectively.

How much horsepower does the Ecotech motor have? ›

Maximum power is 210 hp (160 kW) at 5300 rpm and 221 lb⋅ft (300 N⋅m) of torque at 2500 rpm.

References

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