What Are the Worst Years for Subaru Forester

Not all Subaru Forester years are created equal. Some model years stand out for recurring mechanical problems, poor reliability ratings, and expensive repairs. If you’re shopping for a used Forester, knowing which years to avoid can save you thousands and headaches down the road.

Key Takeaways

• 2014–2015 Subaru Forester: Known for excessive oil consumption, especially in 2.5L engines, leading to engine damage if not monitored closely.
• 2019–2020 Subaru Forester: Early models of the new generation faced issues with the EyeSight driver-assist system, including false warnings and malfunctions.
• 2006–2008 Subaru Forester: Prone to head gasket failures, a common Subaru issue that can cost over $2,000 to repair.
• 2011–2013 Subaru Forester: Reports of CVT (continuously variable transmission) problems, including jerking, hesitation, and premature wear.
• 2009–2010 Subaru Forester: Engine knocking and timing belt issues, particularly in high-mileage vehicles.
• Always check maintenance history: Even problematic years can be reliable with proper care and timely repairs.
• Consider certified pre-owned (CPO): CPO Foresters often come with extended warranties and thorough inspections, reducing risk.

Introduction: Why Knowing the Worst Years for Subaru Forester Matters

Subaru has built a loyal following over the decades, and the Forester is one of its most popular models. Known for its rugged design, standard all-wheel drive, and practicality, the Forester has been a go-to choice for families, outdoor enthusiasts, and city drivers alike. But like any vehicle, not every model year delivers the same level of reliability. Some years have earned a reputation for recurring mechanical issues, costly repairs, and frustrating owner experiences.

Whether you’re buying a used Forester or just curious about the model’s history, understanding which years to approach with caution can make a big difference. A bad model year doesn’t necessarily mean disaster—many issues can be managed with proper maintenance—but it does mean you’ll need to do your homework. In this guide, we’ll break down the worst years for the Subaru Forester, explain the common problems, and offer practical advice to help you make a smart, informed decision.

Understanding Subaru Forester Generations and Reliability Trends

The Subaru Forester has gone through several generations since its debut in 1997. Each generation brought updates in design, technology, and engineering, but also introduced new challenges. Reliability tends to dip during major redesigns or when new technology is introduced without enough real-world testing. That’s why some of the worst years for the Subaru Forester coincide with model transitions or the rollout of new features like the CVT transmission or EyeSight safety suite.

Subaru’s reputation for durability is well-earned, but it’s not immune to flaws. The brand has faced class-action lawsuits and widespread complaints about specific issues, such as oil consumption and head gasket failures. These problems are often tied to certain engines or model years, making it essential to know which ones to avoid. By understanding the generational timeline and common failure points, you can better assess risk when shopping for a used Forester.

Generational Breakdown of the Subaru Forester

The Forester has evolved through five main generations:

• First Generation (1997–2002): Based on the Impreza platform, early Foresters were compact and basic. While generally reliable, they’re now too old for most buyers.
• Second Generation (2003–2008): Larger and more refined, this generation introduced the 2.5L engine. Unfortunately, it also brought head gasket issues that plague many models today.
• Third Generation (2009–2013): A major redesign with updated styling and the introduction of the CVT. This era saw mixed reliability, with some strong years and some problematic ones.
• Fourth Generation (2014–2018): A complete overhaul with a new platform, improved safety, and better fuel economy. However, oil consumption became a widespread concern.
• Fifth Generation (2019–present): The latest generation features modern tech, improved ride quality, and the latest EyeSight system. Early models, however, had software and sensor glitches.

Knowing which generation your potential Forester belongs to is the first step in evaluating its reliability. From there, you can dive deeper into the specific issues that affected certain years.

The 2014–2015 Subaru Forester: Oil Consumption Nightmare

The 2014 and 2015 Subaru Forester models are often cited as some of the worst years for the vehicle, primarily due to excessive oil consumption. Owners reported burning through a quart of oil every 1,000 to 1,500 miles—far beyond the acceptable range. This issue was most common in the 2.5L four-cylinder engine, which powered the majority of Foresters during this period.

Subaru acknowledged the problem and extended the powertrain warranty to 8 years or 100,000 miles for affected vehicles. However, many owners still faced costly repairs if their warranty had expired or if the damage was already done. In severe cases, low oil levels led to engine knocking, reduced performance, and even complete engine failure.

Why Did the 2014–2015 Forester Burn Oil?

The root cause was traced to faulty piston rings that didn’t seal properly, allowing oil to seep into the combustion chamber and burn off. Subaru eventually revised the piston design in later models, but the damage was already done for early 2014–2015 Foresters. Owners were advised to check oil levels frequently and top off as needed, but this was hardly a long-term solution.

If you’re considering a 2014 or 2015 Forester, be extra cautious. Ask for maintenance records to see if the previous owner monitored oil levels. A compression test or leak-down test can also reveal internal engine wear. Even if the car seems fine now, the underlying issue may still be present.

Tips for Buying a 2014–2015 Forester

• Check the oil level before and after a test drive—any significant drop is a red flag.
• Ask if the vehicle had the piston ring recall repair (Subaru issued a technical service bulletin but not a full recall).
• Look for signs of blue smoke from the exhaust, which indicates oil burning.
• Consider a pre-purchase inspection by a trusted mechanic familiar with Subaru engines.

The 2006–2008 Subaru Forester: Head Gasket Failures

The 2006–2008 Subaru Forester models are infamous for head gasket failures, a problem that has haunted Subaru vehicles for years. The head gasket sits between the engine block and cylinder head, sealing in combustion gases and coolant. When it fails, coolant can leak into the cylinders or oil passages, leading to overheating, white exhaust smoke, and engine damage.

This issue was particularly common in the 2.5L naturally aspirated engine used in these Foresters. Subaru eventually improved the design, but many 2006–2008 models still suffer from premature gasket wear, especially if they’ve been driven in hot climates or haven’t been properly maintained.

Signs of a Failing Head Gasket

• Overheating, even with a full coolant reservoir.
• White, sweet-smelling smoke from the exhaust.
• Milky or frothy oil on the dipstick (indicating coolant mixing with oil).
• Bubbles in the coolant overflow tank.
• Loss of coolant with no visible leaks.

If you notice any of these symptoms, stop driving the vehicle immediately. Continuing to drive with a blown head gasket can warp the cylinder head or destroy the engine.

Repair Costs and Prevention

Replacing a head gasket is a major repair, typically costing between $1,500 and $2,500 depending on labor rates and whether the cylinder head needs machining. Some owners opt for a “head gasket delete” kit, which replaces the gasket with a permanent seal, but this is controversial and not recommended by Subaru.

To reduce the risk, maintain proper coolant levels and use the correct Subaru-approved coolant. Avoid overheating by keeping the cooling system in good condition—replace the thermostat and radiator cap as recommended. If you’re buying a used 2006–2008 Forester, assume the head gasket may fail and budget accordingly.

The 2011–2013 Subaru Forester: CVT Transmission Troubles

The 2011–2013 Subaru Forester models introduced the continuously variable transmission (CVT), a fuel-efficient alternative to traditional automatics. While the CVT offered smoother acceleration and better gas mileage, it also brought new reliability concerns. Many owners reported jerking, hesitation, and shuddering during acceleration, especially in cold weather.

Subaru issued several technical service bulletins (TSBs) addressing CVT software updates and torque converter issues, but problems persisted. In some cases, the transmission would fail prematurely, requiring a full replacement that could cost $4,000 or more.

Common CVT Symptoms in 2011–2013 Foresters

• Hesitation when accelerating from a stop.
• Jerking or lurching during gear changes.
• Whining or grinding noises from the transmission.
• Check Engine Light with codes related to transmission pressure or speed sensors.
• Reduced fuel economy compared to expected ratings.

These issues were more common in vehicles with high mileage or poor maintenance history. Subaru did extend the CVT warranty to 10 years or 100,000 miles for some models, but coverage varied by region and dealership.

How to Protect Yourself

If you’re eyeing a 2011–2013 Forester, ask for a full transmission service history. Look for records of fluid changes—CVTs require special fluid and should be changed every 30,000 to 60,000 miles. Avoid vehicles that have been used for towing or heavy hauling, as this puts extra strain on the transmission.

During a test drive, pay close attention to how the car accelerates. Any hesitation or unusual noises should be investigated. A professional inspection can include a transmission pressure test to assess internal wear.

The 2019–2020 Subaru Forester: EyeSight Glitches and Software Bugs

The 2019 and 2020 Subaru Forester models marked the debut of the fifth generation, featuring a complete redesign, improved safety, and the latest version of the EyeSight driver-assist system. While these updates were welcomed, early adopters encountered a range of software and sensor-related issues that affected daily driving.

The EyeSight system, which includes adaptive cruise control, lane departure warning, and pre-collision braking, was prone to false alerts and malfunctions. Some drivers reported the system suddenly braking for no reason, while others experienced unresponsive touchscreens or glitchy infotainment systems.

Reported EyeSight Problems

• False forward collision warnings, especially in rain or fog.
• Adaptive cruise control disengaging unexpectedly.
• Lane departure warnings activating on straight roads.
• Camera or radar sensors failing due to dirt, snow, or software bugs.
• Infotainment system freezing or rebooting during use.

Subaru released multiple software updates to address these issues, but some problems persisted. In rare cases, dealerships replaced sensors or control modules under warranty.

Is the 2019–2020 Forester Still a Good Buy?

Despite the early hiccups, the 2019–2020 Forester is generally a solid choice, especially if it has received the latest software updates. Many of the EyeSight issues were resolved in later model years, and the overall build quality and safety ratings are excellent.

When shopping for one of these models, ask the dealer or previous owner if all available software updates have been installed. Check for any open recalls related to the EyeSight system. A test drive in various conditions—highway, city, and low-light—can help you assess how well the system performs in real-world scenarios.

The 2009–2010 Subaru Forester: Engine Knocking and Timing Belt Concerns

The 2009–2010 Subaru Forester models, part of the third generation, introduced a new 2.5L engine and updated styling. While these years are often overlooked, they come with their own set of reliability concerns, particularly related to engine knocking and timing belt maintenance.

Engine knocking—a pinging or rattling sound during acceleration—was reported by several owners. This was often linked to carbon buildup in the combustion chamber or low-quality fuel. In some cases, it indicated more serious issues like worn bearings or piston slap.

Timing Belt Risks

The 2009–2010 Forester uses a timing belt instead of a timing chain. Timing belts must be replaced every 105,000 miles (or sooner in severe driving conditions). If the belt fails, it can cause catastrophic engine damage, especially in interference engines like Subaru’s.

Many owners neglect this critical maintenance item, especially if the car has been driven primarily in mild climates. A failed timing belt can destroy valves, pistons, and cylinder heads—repairs that often exceed the value of the vehicle.

What to Look For

• Ask for proof of timing belt replacement. If it hasn’t been done and the car has over 90,000 miles, budget $800–$1,200 for the service.
• Listen for unusual engine noises during a cold start or under load.
• Use high-quality fuel and consider fuel system cleaners to reduce carbon buildup.
• Avoid modifying the engine or using aftermarket tuning, which can increase knocking risk.

How to Avoid Buying a Problematic Subaru Forester

Even with known issues in certain years, you can still find a reliable Subaru Forester with the right approach. The key is due diligence—doing your homework before handing over any cash.

Step 1: Research the Specific Model Year

Use resources like the National Highway Traffic Safety Administration (NHTSA) website, Consumer Reports, and Subaru forums to check for recalls, complaints, and common problems. Look for patterns—if dozens of owners report the same issue, it’s likely a real concern.

Step 2: Get a Vehicle History Report

Always request a vehicle history report from services like Carfax or AutoCheck. These reports show accidents, title issues, service records, and odometer readings. A clean report doesn’t guarantee reliability, but a problematic one is a major red flag.

Step 3: Schedule a Pre-Purchase Inspection

Never skip a pre-purchase inspection, especially for high-risk years. A qualified mechanic can check for oil leaks, transmission health, engine condition, and signs of previous repairs. For Subaru-specific issues, consider a shop that specializes in Japanese imports.

Step 4: Test Drive in Real Conditions

Take the Forester on a thorough test drive. Accelerate hard, brake suddenly, and drive on highways and city streets. Pay attention to how the transmission shifts, how the engine sounds, and whether any warning lights appear.

Step 5: Consider Certified Pre-Owned (CPO)

Subaru’s CPO program includes a 152-point inspection, extended warranty, and roadside assistance. While CPO vehicles cost more, they offer peace of mind, especially for problematic model years.

Conclusion: Make an Informed Decision

The Subaru Forester is a capable, versatile SUV that has earned its place in the hearts of drivers worldwide. But like any vehicle, some years are better than others. The worst years for Subaru Forester—2014–2015, 2006–2008, 2011–2013, 2019–2020, and 2009–2010—come with known issues that can lead to expensive repairs and frustration.

That doesn’t mean you should avoid these years entirely. With proper maintenance, timely repairs, and careful inspection, many of these Foresters can still provide reliable service. The key is to go in with your eyes open, understand the risks, and take steps to mitigate them.

Whether you’re a first-time buyer or upgrading from an older model, use this guide as your roadmap. Do your research, ask the right questions, and don’t rush the process. A little extra effort now can save you thousands—and keep you safely on the road for years to come.

Frequently Asked Questions

What year Subaru Forester has the most problems?

The 2014 and 2015 Subaru Forester models are often considered the worst due to widespread oil consumption issues. Many owners reported burning a quart of oil every 1,000 miles, leading to engine damage if not addressed.

Are older Subaru Foresters reliable?

Older Foresters can be reliable if well-maintained, but models from 2006–2008 are prone to head gasket failures, and 2009–2010 models may have timing belt and engine knocking issues. Always check maintenance history.

Is the 2019 Subaru Forester reliable?

The 2019 Forester is generally reliable but had early issues with the EyeSight system, including false alerts and software glitches. Most problems were resolved with updates, so check if the vehicle has the latest software.

How often should I change the oil in a Subaru Forester?

Subaru recommends oil changes every 6,000 miles or 6 months for most Forester models. However, if you own a 2014–2015 model with oil consumption issues, check the oil level weekly and top off as needed.

Can a blown head gasket be fixed on a Subaru Forester?

Yes, a blown head gasket can be repaired, but it’s expensive—typically $1,500 to $2,500. The repair involves removing the cylinder head, replacing the gasket, and possibly machining the head. Prevention through proper cooling system maintenance is key.

Should I avoid the CVT transmission in older Foresters?

The CVT in 2011–2013 Foresters had reliability concerns, including jerking and premature wear. If well-maintained and serviced regularly, it can last, but budget for potential repairs and avoid high-mileage examples without service records.