Hyundai
Sonata
Owner report available
Nissan
Altima
Owner report available
Hyundai Sonata vs Nissan Altima
The short answer
Based on available data, the Hyundai Sonata comes out ahead of the Nissan Altima on power. Check the specs table and owner sentiment below for the full comparison before deciding between the two. Both are covered by real owner reports on CarWizz.
Specs side by side
What owners say
Sonata
Overall
Sentiment is sharply divided by generation and powertrain, creating a high-risk, high-reward ownership profile. For models from approximately 2011-2019 equipped with the Theta II engine (particularly 2.0L and 2.4L variants), sentiment is overwhelmingly negative due to catastrophic, well-documented engine failures often occurring between 80,000 and 120,000 miles, leading to significant downtime, repair hassles, and loss of confidence. For the current generation (2020+), particularly hybrid models and those with newer "Smartstream" engines, sentiment shifts to positive, with owners praising superior value, advanced technology, quiet and comfortable highway ride, intuitive infotainment, and generous warranty coverage.
Best version to buy
For the current generation, the Sonata Hybrid Limited trim is frequently highlighted. Owners cite its comprehensive feature set, including a 360-degree camera, cooled seats, advanced highway driving assist (HDA), and a quiet, refined ride.
Known issues
- Catastrophic engine failure (Theta II engines, 2.0L, 2.4L): engines "grenade" or "blow" with little to no warning, often between 80,000-120,000 miles. Requires complete replacement. Frequency: very frequent for affected generations.
- Excessive oil consumption: engines "guzzle oil," particularly in models from around 2015, leading to potential engine damage if not monitored closely. Frequency: recurrent.
- Transmission failure: complete transmission replacement reported around 87,000-95,000 miles on some 2017-2018 models. Frequency: isolated.
Altima
Overall
Extremely negative sentiment regarding long-term reliability, dominated by widespread and severe criticism of the Continuously Variable Transmission (CVT). The CVT is described as a fundamental design flaw leading to premature failure, often between 80,000 and 150,000 miles, with replacement costs cited around $4,000. This issue is so pervasive it has spawned multiple class-action lawsuits, particularly for models from the 2010-2020 period.
Best version to buy
Insufficient owner data available to identify a consensus "best" model year or trim. Isolated positive anecdotes reference older models (e.g., 2002 Maxima, pre-2010 Altimas) with traditional automatic transmissions, but no specific Altima generation or trim receives repeated endorsement.
Known issues
- CVT transmission failure: Catastrophic failure requiring full replacement, often between 80,000-150,000 miles; symptoms include jerking, shuddering, loss of acceleration, lurching at low speeds, and inability to rev beyond a certain RPM.
- CVT-related problems (general): Whining noise, rubber band effect, laggy throttle response, and general concerns about long-term durability. Frequency: very frequent.
- Engine issues (various): For 2019-2021 models with the 2.0L VC-Turbo engine, a manufacturing defect in engine bearings can lead to catastrophic engine failure, knocking noises, loss of power, and potential fire, as detailed in a NHTSA reca…
The verdict
The Hyundai Sonata is the better choice for most buyers.
It has more power on its best-equipped version than the Nissan Altima, based on the data above. If efficiency matters more to you than outright power, the Nissan Altima is worth a closer look instead.
Explore further
Common problems by model year
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Frequently asked questions
Which is more reliable, the Hyundai Sonata or the Nissan Altima?
Owner reports show similar reliability sentiment for the Hyundai Sonata and the Nissan Altima. Check the known issues listed above for specific differences between the two.
Which is better for families, the Hyundai Sonata or the Nissan Altima?
Data on family-specific factors like cargo space is limited for one or both models, but based on available reports, both are positioned as practical daily drivers. Check the specs table above for seating and body type.
Which has better fuel economy, the Hyundai Sonata or the Nissan Altima?
The EPA rates the 2027 Hyundai Sonata at 26–51 mpg combined and the 2026 Nissan Altima at 28–30 mpg, depending on the version.
Which is cheaper to maintain, the Hyundai Sonata or the Nissan Altima?
Exact maintenance costs aren't in our data, but owner reports mention cost-related concerns more often for the Nissan Altima than the Hyundai Sonata. See the known issues comparison above.