Product Overview
The 1AZ and 2AZ are Toyota’s mainstream inline‑4, DOHC, naturally aspirated gasoline engines in the AZ series, produced from 2000 to 2019. Designed for transverse mounting in front‑wheel‑drive (FWD) sedans, SUVs, and MPVs, they feature aluminum alloy block & heads, VVT‑i (Variable Valve Timing‑intelligent), and sequential fuel injection, balancing fuel efficiency, reliability, and smooth power delivery.
1AZ‑FE (2.0L) – Core Product Description
Product Name: Toyota 1AZ‑FE 2.0L Inline‑4 Gasoline Engine
Key Features:
- 2.0L (1,998 cc) displacement, square bore/stroke (86×86 mm) for balanced revving
- DOHC 16‑valve, VVT‑i (intake side only) for optimized low‑mid torque
- Aluminum block with cast‑iron liners, lightweight (≈117 kg)
- Sequential Multiport Fuel Injection (SFI), direct ignition (DIS)
- Compression ratio: 9.6:1–9.8:1 (market‑dependent)
- Built for daily commuting, fuel economy, and low maintenance
- Applications: Toyota Camry, RAV4, Ipsum, Wish, Avensis, Noah/Voxy
2AZ‑FE (2.4L) – Core Product Description
Product Name: Toyota 2AZ‑FE 2.4L Inline‑4 Gasoline Engine
Key Features:
- 2.4L (2,362 cc) displacement, undersquare (88.5×96 mm) for strong low‑end torque
- DOHC 16‑valve, VVT‑i (later upgraded to Dual VVT‑i in some markets)
- Aluminum block & head, lightweight design
- Sequential SFI + DIS, compatible with 87–91 RON gasoline
- Compression ratio: 9.6:1 (standard) / 11.0:1 (FSE direct‑injection version)
- Renowned for durability, smoothness, and high torque at low RPM
- Applications: Toyota Camry, RAV4, Previa (Estima), Corolla, Matrix, Scion tC
Full Technical Specifications
1AZ‑FE (2.0L)
| Parameter |
Specification |
| Engine Code |
1AZ‑FE |
| Production |
2000–2019 |
| Displacement |
1,998 cc (122 cu in) |
| Layout |
Inline‑4, transverse, water‑cooled, NA |
| Bore × Stroke |
86.0 mm × 86.0 mm (3.39 in × 3.39 in) |
| Compression Ratio |
9.6:1 / 9.8:1 |
| Valvetrain |
DOHC 16V, chain drive, VVT‑i (intake) |
| Fuel System |
Sequential Multiport Fuel Injection (SFI) |
| Ignition |
Direct Ignition (DIS), coil‑on‑plug |
| Power Output |
145–150 hp (108–112 kW) @ 6,000 rpm |
| Torque |
190–196 N·m (140–145 lb·ft) @ 4,000 rpm |
| Engine Weight |
≈117 kg (258 lb) |
| Oil Capacity |
4.2 L (with filter) |
| Recommended Fuel |
91 RON (regular unleaded) |
2AZ‑FE (2.4L)
| Parameter |
Specification |
| Engine Code |
2AZ‑FE |
| Production |
2000–2019 |
| Displacement |
2,362 cc (144 cu in) |
| Layout |
Inline‑4, transverse, water‑cooled, NA |
| Bore × Stroke |
88.5 mm × 96.0 mm (3.48 in × 3.78 in) |
| Compression Ratio |
9.6:1 (standard) / 11.0:1 (2AZ‑FSE direct injection) |
| Valvetrain |
DOHC 16V, chain drive, VVT‑i / Dual VVT‑i |
| Fuel System |
Sequential SFI (FE) / D‑4 direct injection (FSE) |
| Ignition |
Direct Ignition (DIS), coil‑on‑plug |
| Power Output |
158–167 hp (118–125 kW) @ 5,600–6,000 rpm |
| Torque |
220–231 N·m (162–170 lb·ft) @ 4,000 rpm |
| Engine Weight |
≈124 kg (273 lb) |
| Oil Capacity |
4.5 L (with filter) |
| Recommended Fuel |
87–91 RON (regular unleaded) |
Variant Details (1AZ‑FSE / 2AZ‑FSE)
1AZ‑FSE (Direct Injection)
- Compression Ratio: 10.5:1–11.0:1
- Power: 152–155 hp (113–115 kW) @ 6,000 rpm
- Torque: 192–200 N·m (142–148 lb·ft) @ 4,000 rpm
- Fuel: D‑4 direct injection, higher efficiency
2AZ‑FSE (Direct Injection)
- Compression Ratio: 11.0:1
- Power: 163 hp (120 kW) @ 5,800 rpm
- Torque: 231 N·m (170 lb·ft) @ 3,800 rpm
- Fuel: D‑4 direct injection, improved fuel economy
Application Models (English)
1AZ‑FE
- Toyota Camry (2002–2009, SE Asia/Taiwan)
- Toyota RAV4 (2000–2006)
- Toyota Ipsum (2001–2009)
- Toyota Wish (2004–2008)
- Toyota Avensis (Europe)
- Toyota Noah/Voxy (Japan)
2AZ‑FE
- Toyota Camry (2002–2011)
- Toyota RAV4 (2004–2012)
- Toyota Previa (Estima) (2000–2016)
- Toyota Corolla (2003–2008)
- Toyota Matrix (2003–2008)
- Scion tC (2005–2010)