2018 Subaru Impreza Oil Capacity and Required 0W-20
2018 Subaru Impreza Oil Capacity and Required 0W-20 with application table, generation boundaries, verification steps.
Subaru specifies 4.7 US qt (4.4 L) during an oil-and-filter change on the 2018 Impreza 2.0L.
Subaru specifies 4.7 US qt (4.4 L) during an oil-and-filter change on the 2018 Impreza 2.0L.
This specification applies to the naturally aspirated U.S.-market 2018 Impreza. It is not a WRX or WRX STI value, and it should not be assumed for a different FB/EJ engine generation merely because the badge still says Impreza.

Interactive 2018 Impreza 2.0L specification guide
Branded downloads includedPNG and PDF exports carry the TorqueSheet logo, torquesheet.com, source-page URL, and republishing attribution request. The PDF source link is clickable.
Use this visual as an orientation aid. The exact VIN, engine, trim and manufacturer document control the specification.
Subaru Impreza Oil Capacity Specs
| APPLICATION / ITEM | SPECIFICATION | NOTES |
|---|---|---|
| Oil and filter change | 4.7 US qt | 4.4 L; 3.9 Imperial qt |
| Engine | 2.0L naturally aspirated | 2018 Impreza |
| Specified viscosity | SAE 0W-20 synthetic | Do not substitute WRX 5W-30 row |
| Oil quality | API SN RC or ILSAC GF-5 | Final level by dipstick |
Use synthetic SAE 0W-20 meeting ILSAC GF-5 or API SN with Resource Conserving wording as stated in the guide. Refill short of 4.7 qt, circulate the oil and check for filter or drain-plug leaks, then allow drain-back on level ground and finish at the dipstick full mark. Subaru's guide shows roughly one quart between the low and full marks, but that is a correction reference—not permission to add a full quart without checking.
Application boundaries for 2018 Impreza 2.0L
This specification applies to the naturally aspirated U.S.-market 2018 Impreza. It is not a WRX or WRX STI value, and it should not be assumed for a different FB/EJ engine generation merely because the badge still says Impreza.
Use synthetic SAE 0W-20 meeting ILSAC GF-5 or API SN with Resource Conserving wording as stated in the guide. Refill short of 4.7 qt, circulate the oil and check for filter or drain-plug leaks, then allow drain-back on level ground and finish at the dipstick full mark. Subaru's guide shows roughly one quart between the low and full marks, but that is a correction reference—not permission to add a full quart without checking.
Subaru 2018 Impreza 2.0L specifications can change by model year, engine, platform, wheel, and installed component. Confirm the VIN or engine identity, part numbers, fastener condition, and the current manufacturer instructions before service.
Procedures used with this specification
These steps are the same for every vehicle in this family, so they are documented once rather than repeated on each page. The values above remain specific to this Subaru 2018 Impreza 2.0L.
2018 Subaru Impreza Oil Capacity and Required 0W-20 FAQs
How much oil does a 2018 Subaru Impreza take?+
4.7 US qt (4.4 L) during an oil-and-filter change on the 2018 Impreza 2.0L.
Does this figure cover a WRX or STI?+
No. It applies to the naturally aspirated U.S.-market 2018 Impreza. It is not a WRX or WRX STI value and should not be assumed for a different FB or EJ engine generation just because the badge still reads Impreza.
Which oil does the 2018 Impreza 2.0L require?+
Synthetic SAE 0W-20 meeting ILSAC GF-5, or API SN with Resource Conserving wording, as stated in the guide.
My dipstick reads low — can I add a full quart?+
No. Subaru's guide shows roughly one quart between the low and full marks, which is a correction reference rather than permission to add a quart without checking. Top up gradually and re-read the dipstick on level ground.
Technical sources
TorqueSheet favors engine- and component-specific manufacturer instructions over unsourced universal values.
12018 Subaru Impreza Quick Guide — engine oilPrimary Subaru guide specifying 4.7 US qt (4.4 L) for an oil-and-filter change and synthetic 0W-20 meeting API SN Resource Conserving or ILSAC GF-5.↗