How much oil does a 2018 Prius take?
The 2018 Prius generally requires about 4.4 quarts (4.2 liters) of engine oil for a full change with a new filter, using 0W-20 synthetic oil. If you don’t replace the filter, the capacity is around 4.0 quarts (3.8 liters).
This article covers the official capacity figures for the standard 2018 Prius with the 1.8-liter Atkinson-cycle engine, the recommended oil type, and practical guidance for maintenance. Always check your owner's manual or consult a Toyota technician for model-specific details, especially if aftermarket parts are involved.
Oil capacity specifics for the 2018 Prius
Numbers at a glance
Here are the official capacity figures and what they mean for a typical drain-and-fill service.
- Engine oil capacity (with filter): 4.4 quarts (4.2 liters)
- Engine oil capacity (without filter): 4.0 quarts (3.8 liters)
- Recommended oil: 0W-20 synthetic oil (full synthetic)
- Recommended filter: Toyota's standard oil filter or equivalent meeting OEM specs
Note: These figures apply to the standard 2018 Prius with the 1.8L hybrid engine. Variations can occur by regional specs or trim, so verify with the owner's manual for your exact configuration.
Maintenance intervals and practical tips
Interval expectations and top-up guidance
Before listing intervals and top-up guidance, here’s what you should know about oil changes and oil level checks for the 2018 Prius.
- Oil-change interval: typically every 10,000 miles (16,000 km) or 12 months when using synthetic 0W-20 oil, whichever comes first.
- Severe-driving conditions may necessitate more frequent changes (short trips, heavy traffic, extreme temperatures, towing).
- Check engine oil level with the dipstick after a change and top up with the same 0W-20 synthetic oil if needed, keeping the level between the MIN and MAX marks.
Bottom line: For a standard 2018 Prius, plan to replace about 4.4 quarts of 0W-20 synthetic oil per oil-change, with a new filter, following Toyota’s baseline guidance. In harsh driving conditions, adjust accordingly.
Summary
In short, the 2018 Toyota Prius takes about 4.4 quarts (4.2 liters) of engine oil when performing a full change with a new filter, using 0W-20 synthetic oil. Without replacing the filter, the capacity is around 4.0 quarts (3.8 liters). Use 0W-20 synthetic and follow a typical maintenance interval of roughly 10,000 miles (12 months), increasing frequency under severe driving conditions. Always verify specifics in your vehicle’s manual.
