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.
EZ family: EZ30, EZ36.
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 |
The engine was installed on:
- Subaru Legacy 3 (BE) in 2000 – 2003 (EZ30D), Legacy 4 (BL) in 2003 – 2009 (EZ30R);
- Subaru Outback 2 (BH) in 2000 – 2004 (EZ30D), Outback 3 (BP) in 2003 – 2009 (EZ30R);
- Subaru Tribeca 1 (WX) in 2006 – 2007 (EZ30R).
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.
Frequently asked questions about the Subaru EZ30
How much power does the Subaru EZ30 make?
Power output of the Subaru EZ30, hp: 220 (EZ30D); 245 (EZ30R). Torque, Nm: 290 (EZ30D); 297 (EZ30R).
How much oil does the Subaru EZ30 take and which one?
Engine oil capacity: 5.7 (EZ30D); 5.8 (EZ30R) liters. Recommended oil: 5W-30.
Does the Subaru EZ30 have a timing belt or chain?
The Subaru EZ30 uses a timing chain.
Is the Subaru EZ30 turbocharged?
No, the Subaru EZ30 is naturally aspirated.
Does the Subaru EZ30 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 Subaru EZ30 last?
The typical lifespan of the Subaru EZ30 is ~300 000 km with proper maintenance.
What is the fuel consumption of the Subaru EZ30?
EZ30D for Subaru Outback 2002: city 14.0, highway 7.6, combined 9.9 L/100 km.
What cars was the Subaru EZ30 installed on?
Subaru Legacy 3 (BE) in 2000 - 2003 (EZ30D), Legacy 4 (BL) in 2003 - 2009 (EZ30R); Subaru Outback 2 (BH) in 2000 - 2004 (EZ30D), Outback 3 (BP) in 2003 - 2009 (EZ30R); Subaru Tribeca 1 (WX) in 2006 - 2007 (EZ30R).
What are the common problems of the Subaru EZ30?
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. All known problems.
What engines are related to the Subaru EZ30?
EZ family: EZ36.
