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Yes, based on professional reviews, the 2020 Subaru Legacy's standard 2.5-liter engine is considered underpowered, making the optional 2.4-liter turbocharged engine a significantly better choice for drivers seeking responsive performance. This conclusion comes from firsthand testing by automotive experts who found the base powertrain lacking in acceleration and responsiveness, placing it at the bottom of its class. For shoppers considering a used 2020 Legacy, understanding this key difference is critical to making an informed purchase decision.
The primary criticism of the 2020 Subaru Legacy centers on its standard powertrain. The base engine is a 2.5-liter horizontally opposed four-cylinder, also known as a boxer engine (where the pistons move horizontally, contributing to a lower center of gravity). It produces 182 horsepower and is paired with a continuously variable automatic transmission (CVT), a type of transmission that uses a pulley system for seamless gear shifts aimed at improving fuel economy.
In testing, this combination was found to deliver "meager power from a stop." When more acceleration is needed, the response is notably slow, with one reviewer comparing its "athletic prowess" to that of a sloth. This lack of urgency is a significant drawback for common driving scenarios like merging onto highways or passing slower traffic. The driving experience is characterized by a loud engine note as the CVT holds high revs during acceleration, without a corresponding increase in speed.
For the 2020 model year, Subaru replaced the previous top-tier six-cylinder engine with a new, more efficient turbocharged 2.4-liter four-cylinder engine. This engine generates a robust 260 horsepower and 277 lb-ft of torque. Turbocharging forces more air into the engine's cylinders, allowing it to burn more fuel and produce significantly more power.
While the base engine struggles, reviewers who tested the turbocharged model noted it "has to be better." This engine provides the strong, responsive acceleration that the base model lacks, transforming the Legacy into a competent and confident sedan. The table below highlights the key differences:
| Feature | Standard 2.5L Engine | Optional 2.4L Turbo Engine |
|---|---|---|
| Horsepower | 182 hp | 260 hp |
| Torque | 176 lb-ft | 277 lb-ft |
| Expected Performance | Sluggish, class-trailing | Responsive, confident |
| Best For | Budget-conscious drivers focused solely on fuel economy | Drivers seeking a balance of comfort and performance |
Beyond the powertrain, the 2020 Subaru Legacy moved to Subaru's new Global Platform, which generally improves rigidity, safety, and ride comfort. The sedan received high marks for its comfortable ride, spacious interior, and a host of standard tech and safety features, including EyeSight® Driver Assist Technology, which encompasses adaptive cruise control and lane-keeping assist.
Therefore, the Legacy remains a compelling option if you value all-wheel drive capability, a comfortable cabin, and advanced safety systems. However, the choice of engine fundamentally defines the driving experience. Opting for the base engine means accepting significantly compromised performance.
When evaluating a used 2020 Subaru Legacy, your primary focus should be on identifying which engine it has. Here is a practical guide:
In summary, while the 2020 Subaru Legacy offers many strengths, its standard engine is a major weak point. For a satisfying ownership experience, shoppers are strongly advised to seek out a model equipped with the optional 2.4-liter turbocharged engine. The performance upgrade is substantial and transforms the sedan from underwhelming to highly competent.
