Parts for your 2013 Subaru Impreza-Egr valve

2013 Subaru Impreza EGR valve — fitted or not?

Short answer: the 2013 Subaru Impreza (GP/GJ, 2.0-litre FB20, Australia and New Zealand market) isn’t fitted with an external EGR valve. Technical references back this up: the Subaru Service Manual for the 2012MY–2014MY Impreza (Engine, FB section) contains no EGR valve/cooler circuit, Subaru’s Electronic Parts Catalogue (FAST) for GP/GJ VIN ranges lists no EGR valve, cooler, or EGR piping, and emissions certification data for the 2013 FB20 (LEV II/PZEV) specifies no external EGR, relying instead on cam phasing and three-way catalyst control. EGR hardware appears on later platforms and engines (for example, FB25 in 2015+ Outback/Liberty and the 2017+ Impreza FB20 with direct injection), which is likely why people sometimes expect to find one on a 2013 model.

Why there’s no EGR on this model comes down to the FB20’s emissions strategy. The engine uses dual AVCS (variable cam timing on both intake and exhaust) to achieve “internal EGR” via valve overlap, diluting the intake charge with a controlled amount of residual exhaust gas. That trims combustion temperatures and NOx without needing a separate EGR valve and cooler. Add in port fuel injection, efficient combustion chambers, precise lambda control, and a robust three‑way catalytic converter, and the 2013 Impreza meets its emissions targets without the complexity of an external EGR system.

• Thinking you’ve got an EGR fault? On this model it’s more likely a generic OBD app mislabelling a code. Check the basics first: intake leaks, PCV system condition, MAF contamination, throttle body cleanliness, O2/AFR sensor health, and catalyst efficiency.
• If someone quotes for an “EGR valve replacement” on a 2013 GP/GJ 2.0i, ask for the Subaru part number and a diagram. For AU/NZ-delivered cars of this year and engine, there isn’t an EGR valve to replace.

If the goal is preventative maintenance that achieves what EGR systems normally help with (clean, efficient combustion), focus on regular oil changes with the correct spec, fresh air and fuel filters, periodic MAF/throttle body cleaning, and keeping the cooling system in top shape to manage combustion temperatures. That’ll keep the FB20 running sweet under the bonnet and your emissions right on the money.

Popular questions about the 2013 Subaru Impreza EGR valve

Does a 2013 Subaru Impreza have an EGR valve?
For AU/NZ-delivered GP/GJ 2.0i models, no. Subaru’s service literature and parts catalogue for 2012–2014 Impreza don’t show EGR hardware, and the emissions setup relies on variable valve timing and the catalyst rather than an external EGR valve.

How does the 2013 Impreza control NOx without an EGR valve?
It uses dual AVCS to retain a controlled amount of exhaust in-cylinder (internal EGR), plus precise fuelling and ignition and a three‑way cat. That combination manages combustion temperature and NOx without the added plumbing of an EGR valve and cooler.

Why am I seeing an EGR code on my scan tool if there’s no EGR?
Some generic OBD apps map universal codes that don’t apply to this engine. If you see an “EGR flow” style code, verify with a Subaru-capable scan tool. Then check likely culprits for drivability or emissions faults on this model: intake leaks, MAF issues, O2/AFR sensors, or catalyst efficiency.