
The Forester years to avoid are 2014 and 2015, followed by 2009-2010 and the 2019 model. These specific model years are documented for significant, costly issues like excessive oil consumption and CVT transmission problems. Avoiding them can prevent a high risk of expensive repairs.
For a used Subaru Forester, reliability varies dramatically by model year. The worst problems are concentrated in specific generations, making a year-by-year assessment critical. Industry reliability surveys and widespread owner reports consistently highlight these patterns.
Most Problematic Years: 2014 & 2015 The 2014 and 2015 Forester models are frequently cited as the least reliable. The primary issue is excessive oil consumption linked to the FB25 engine, where some owners report needing to add a quart of oil every 1,000 miles. Concurrently, these years saw a high incidence of CVT (Continuously Variable Transmission) failures, including shuddering, hesitation, and complete failure, often requiring very costly replacements.
High-Risk Years: 2009 & 2010 The 2009 and 2010 models, marking the third generation's debut, suffer from severe engine issues. Problems range from cracked engine blocks and broken oil pipes to complete engine failure. Repair costs here are often the highest, sometimes leading to total engine replacement.
Notable Early-Year Issue: 2019 Model The 2019 model year introduced the fifth generation. Early production units experienced software glitches with the EyeSight driver-assist system and some transmission tuning issues. While not as catastrophic as earlier problems, they resulted in unreliable performance initially.
Historical Concern: 1998-2003 Models First-generation Foresters (1998-2003) are notoriously prone to head gasket failures, a common issue for Subarus of that era with the EJ25 engine. This is a major repair that often occurs between 80,000 and 130,000 miles.
| Years to Avoid | Primary Reasons | Estimated Repair Cost Range |
|---|---|---|
| 2014-2015 | Excessive oil consumption, CVT failure | $4,000 - $8,000+ for CVT |
| 2009-2010 | Engine failure (cracked blocks, oil pipes) | $5,000 - $7,000+ for engine |
| 2019 | Early-production electronics/transmission software | $500 - $2,000 for diagnostics/updates |
| 1998-2003 | Head gasket failure | $1,800 - $2,500 |
For a reliable purchase, focus on well-maintained examples from 2016-2018 (the refined fourth generation) or 2020 and newer (post-refresh fifth generation). Always obtain a pre-purchase inspection, specifically requesting a leak-down test for oil consumption and a full diagnostic scan for any stored transmission fault codes.

As a mechanic who sees these daily, I tell friends to skip the 2014-2015 Forester. The oil consumption isn't a minor quirk; it's a design flaw that can lead to engine seizure if ignored. We do multiple CVT replacements every month on those years, and the bill starts at over four grand. The 2009-2010 ones are just as bad—when the oil line goes or the block cracks, it's often a total loss. If you're set on a Forester, bring me a 2017 or 2018 to check out instead. They're not perfect, but they fixed the worst of those issues.

I owned a 2015 Forester for three frustrating years. It was the oil consumption that broke me. The dealer’s “consumption test” confirmed it was burning a quart every 1,200 miles, which they called “within spec.” I had to keep oil in the trunk like it was coolant. Then, the CVT started jerking at low speeds. Trading it in for a 2021 model was a revelation—none of those problems exist. My advice is purely from experience: the 2014-2015 models are a gamble with your time and wallet. The peace of mind you get with a newer model is worth the extra cost.

Shopping for a used Forester? Your research should spotlight these years. Market data shows the 2014 and 2015 models have the highest incidence of major drivetrain complaints. The 2009-2010 models follow closely due to engine integrity issues. While the 2019 model is largely solid, its first-year bugs are a consideration. Your target should be the 2016-2018 period, where had worked out the kinks of the new engine and transmission. Always, always check the vehicle history for consistent oil changes and ask if the CVT fluid has been serviced—it’s a key indicator of care.

When evaluating reliability, pattern recognition is key. The Forester’s trouble years cluster around major model changes: the new engine in 2009-2011, the new transmission in 2014-2015, and the new platform in 2019. This isn’t coincidence; it reflects typical teething problems in automotive manufacturing. The core takeaway is to avoid the first years of any new major component. The data suggests the safest buys are the final years of a stable generation, like the 2017-2018 models. They benefit from all the mid-cycle improvements without the unknown risks of a fresh redesign. A thorough pre-purchase inspection is non-negotiable, focusing on the known failure points for the specific generation you’re considering.

When evaluating reliability, pattern recognition is key. The Forester’s trouble years cluster around major model changes: the new engine in 2009-2011, the new transmission in 2014-2015, and the new platform in 2019. This isn’t coincidence; it reflects typical teething problems in automotive manufacturing. The core takeaway is to avoid the first years of any new major component. The data suggests the safest buys are the final years of a stable generation, like the 2017-2018 models. They benefit from all the mid-cycle improvements without the unknown risks of a fresh redesign. A thorough pre-purchase inspection is non-negotiable, focusing on the known failure points for the specific generation you’re considering.


