If you own a Subaru, you already know they’re well-loved for their reliability, safety, and all-wheel-drive performance. But there’s one issue that some Subaru owners have experienced over the years — excessive oil consumption. If you’ve noticed your oil level dropping between oil changes or a burning smell coming from under the hood, you’re not alone.
At Dickerson Automotive in Spanish Fork, we often get calls from Subaru drivers wondering, “Is it normal for my car to burn oil?” Let’s take a closer look at why it happens and what you can do to keep your engine healthy.
Why Some Subarus Burn Oil
Oil consumption can happen with any engine, but it’s been more common in certain Subaru models and years — especially those equipped with 2.0L and 2.5L boxer engines (found in Foresters, Outbacks, Imprezas, and Legacys). The issue typically stems from:
Piston Ring Design
Some Subaru engines were built with low-tension piston rings that don’t always seal perfectly. Over time, this allows small amounts of oil to slip into the combustion chamber and burn off.
High Engine Temperatures
The flat “boxer” engine design tends to run hotter, and when oil gets too thin under heat, it can burn off faster — especially if the oil isn’t changed regularly.
Extended Oil Change Intervals
Subaru recommends longer oil change intervals than some other manufacturers. But if oil breaks down or levels drop before the next service, it can accelerate internal wear and oil loss.
PCV System Issues
A clogged or malfunctioning Positive Crankcase Ventilation (PCV) valve can cause pressure to build inside the engine, pushing oil past the piston rings.
Signs Your Subaru Might Be Burning Oil
If your Subaru is using more oil than usual, you may notice:
A burning oil smell after driving or when stopped at a light
Low oil levels between changes
Blueish exhaust smoke on startup or acceleration
The oil light flickering or staying on
Even if your car seems to run fine, running low on oil can cause serious engine damage over time.
What You Can Do
The best way to protect your Subaru engine is with regular maintenance and monitoring. Here’s what we recommend:
Check your oil level every 1,000 miles.
Keeping a close eye on your oil can prevent costly damage.
Use the right oil.
Subaru engines are picky about oil type and viscosity. Using high-quality synthetic oil helps reduce consumption.
Stick to shorter oil change intervals.
Even if your manual says 6,000–7,500 miles, changing your oil closer to every 4,000–5,000 miles can make a big difference.
Have your PCV system checked.
A simple inspection can rule out pressure-related oil loss issues.
Address oil leaks right away.
Small leaks can turn into bigger problems if left alone.
When to Have It Checked
If you find yourself adding oil often or see smoke from your exhaust, it’s time for a professional inspection. At Dickerson Automotive, our ASE-certified technicians can perform an oil consumption test, inspect seals and gaskets, and ensure your Subaru’s engine is running as it should.
We’re here to help you get the most life out of your Subaru — with honest diagnostics and quality repairs you can trust.
Final Thoughts
A little oil consumption can be normal, but burning through a quart every 1,000 miles is a red flag. Staying proactive with maintenance and keeping an eye on your oil level can save you from major engine repairs down the road.
If you’re concerned about your Subaru burning oil, give us a call or stop by Dickerson Automotive in Spanish Fork. We’ll take a closer look and help you keep your Subaru performing at its best for years to come.