2022+ WRX Maintenance Guide
The factory schedule, plus what changes once the car is tuned.
Verdict
Follow the factory schedule on a stock car. Once tuned, halve the oil interval, treat spark plugs as a wear item rather than a service item, and shorten transmission fluid intervals on an automatic.
The factory schedule in outline
Subaru's WRX schedule runs on a 6,000 mile or six month cadence, with larger services stacking at 30,000 and 60,000 mile intervals. **Every 6,000 miles or 6 months:** engine oil and filter, tire inspection and rotation. **At 30,000 miles:** brake fluid, air filters, engine coolant and the PCV valve, along with cooling and fuel system inspection. **At 60,000 miles:** transmission fluid on automatic cars, and front and rear differential fluid inspected. Services performed at 60,000 repeat at 120,000. **Spark plugs** appear in different places depending on which source you read - commonly somewhere between 30,000 and 60,000 miles. Your owner's manual is the authority for your specific car and market, and it is worth checking rather than trusting an aggregator. That schedule is adequate for a stock car driven normally, and there is nothing exotic about it. One important note before the rest of this guide: Subaru's own guidance already includes a shorter interval provision for hard driving, short trips and extreme temperatures. Most enthusiast owners are in that category whether they think of themselves that way or not.
What changes when you tune the car
A tuned FA24 runs higher boost, higher cylinder pressure and higher sustained temperature. That does not require exotic maintenance. It shortens the useful life of several consumables and reduces your margin for letting things slide. **Oil, roughly halved.** Around 3,000 miles rather than 6,000. This is the single most valuable change and the cheapest. **Spark plugs become a wear item.** Higher cylinder pressure makes a marginal plug misfire under load, and on a tuned car that misfire looks like knock in a datalog and can genuinely cause damage. Replace them meaningfully sooner than the factory interval suggests, and always before a tuning session if the car has miles on it. **Transmission fluid on an automatic.** The SPT is torque-limited, and a tuned car is putting considerably more torque through it than the factory interval assumed. Fluid is the cheapest component in the drivetrain. **Fuel quality becomes maintenance.** A tuned car is far more sensitive to octane than a stock one because the map assumes it. Using the right fuel consistently stops being a preference. **Monitoring becomes part of the routine.** Watching knock behaviour and oil temperature is what separates owners who catch a problem early from those who find out expensively. **What does not change much:** coolant, brake fluid on a street car, and differential fluid on a manual driven normally all follow their normal schedules.
Related Questions
Community FAQ
reliability
How often should I change the oil in a stock or tuned 2022+ WRX?
Subaru's guidance is around 6,000 miles or 6 months. Stock and gently driven, follow it. Tuned, tracked, or driven hard, halve it - roughly 3,000 miles is the sensible interval.
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reliability
Does a tuned or modified WRX need more frequent maintenance?
Yes, but less dramatically than people fear. Shorter oil intervals, plugs treated as a wear item, and actually monitoring the car. Nothing exotic, just more attentive.
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reliability
Should I run 0W-20 or 5W-30 oil in my 2022+ WRX?
0W-20 is the factory specification and the right choice for a stock, warranty-covered car. 5W-30 is a defensible choice for a tuned or tracked VB, and notably the same engine is specified for a heavier grade in some other markets.
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reliability
How should I break in a new VB, and should I change the oil at 1,000 miles?
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