The 3.0-liter Subaru EZ30D gasoline engine was produced by the concern from 2000 to 2004 and was installed only on the third generation of the Legacy model and on the wagon based on its Outback. This unit quickly gave way to an upgraded version with the EZ30R index.
The EZ30R was assembled from 2003 to 2009 and was installed only on the fourth generation Legacy, Outback and Tribeca crossover models. This unit has an unofficial index R, on the manufacturer’s website it is called EZ30D v2.
The EZ series also includes an engine: EZ36.
The engine was installed on:
- Subaru Legacy 3 (BE) in 2000 – 2003 (EZ30D);
- Subaru Legacy 4 (BL) in 2003 – 2009 (EZ30R);
- Subaru Outback 2 (BH) in 2000 – 2004 (EZ30D);
- Subaru Outback 3 (BP) in 2003 – 2009 (EZ30R);
- Subaru Tribeca 1 (WX) in 2006 – 2007 (EZ30R).
Specifications
| Production years | 2000-2009 |
| Displacement, cc | 2999 |
| Fuel system | injector |
| Power output, hp | 220 (EZ30D) 245 (EZ30R) |
| Torque output, Nm | 290 (EZ30D) 297 (EZ30R) |
| Cylinder block | aluminum H6 |
| Block head | aluminum 24v |
| Cylinder bore, mm | 89.2 |
| Piston stroke, mm | 80 |
| Compression ratio | 10.7 |
| Features | DOHC (EZ30D) DOHC, AVLS (EZ30R) |
| Hydraulic lifters | no |
| Timing drive | chain |
| Phase regulator | no (EZ30D) AVCS (EZ30R) |
| Turbocharging | no |
| Recommended engine oil | 5W-30 |
| Engine oil capacity, liter | 5.7 (EZ30D) 5.8 (EZ30R) |
| Fuel type | petrol |
| Euro standards | EURO 3 (EZ30D) EURO 4 (EZ30R) |
| Fuel consumption, L/100 km (EZ30D for Subaru Outback 2002) — city — highway — combined |
14.0 7.6 9.9 |
| Engine lifespan, km | ~300 000 |
| Weight, kg | 170 |
Disadvantages of the EZ30 engine
- First of all, this engine consumes a lot of fuel and is prone to oil leaks;
- He is also very afraid of overheating, and the cooling system is not famous for its reliability;
- The use of non-original oil here quickly disables the chain tensioner;
- On runs over 150 thousand km, a progressive oil burn often begins.
