Hyundai
Sonata
Kia
Sorento
Hyundai Sonata vs Kia Sorento: 2024 Comparison
The short answer
Based on available data, the Hyundai Sonata comes out ahead of the Kia Sorento on fuel economy. 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.
Sorento
Overall
Sentiment is sharply divided and heavily dependent on model year, powertrain, and owner expectations. For newer models (2023-2026), feedback is often positive regarding value, interior comfort, ride quality, feature content, and hybrid fuel economy. Many owners praise the vehicle's spaciousness, comfortable seating for the first two rows, and the premium feel of higher trims for the price.
Best version to buy
The Hybrid (HEV) and Plug-in Hybrid (PHEV) versions, particularly in higher trims like SX Prestige, receive the most consistent praise. Owners note these models, often built in Korea, have "top notch build quality," a refined and smooth drivetrain, excellent real-world fuel economy (reported around 33 MPG), and a comfortable ride.
Known issues
- ⚠• **Transmission failures**: Multiple reports of complete transmission replacements, with one owner citing three new transmissions in a 2024 model within 14 months.
The verdict
The Hyundai Sonata is the better choice for most buyers.
It has better fuel economy on its best-equipped version than the Kia Sorento, based on the data above. If power matters more to you than running costs, the Kia Sorento is worth a closer look instead.
Explore further
Not sure which one fits you?
Answer a few questions and get a personalized recommendation.
Frequently asked questions
Which is more reliable, the Hyundai Sonata or the Kia Sorento?
Owner reports show similar reliability sentiment for the Hyundai Sonata and the Kia Sorento. Check the known issues listed above for specific differences between the two.
Which is better for families, the Hyundai Sonata or the Kia Sorento?
The Kia Sorento seats more passengers than the Hyundai Sonata on its catalogued best-equipped version. Body type also differs: the Hyundai Sonata is classed as a Sedan, the Kia Sorento as a SUV.
Which has better fuel economy, the Hyundai Sonata or the Kia Sorento?
The Hyundai Sonata is more fuel-efficient on paper: 9 L/100km combined versus 11.2 L/100km for the Kia Sorento, based on the best-equipped catalogued version of each.
Which is cheaper to maintain, the Hyundai Sonata or the Kia Sorento?
Exact maintenance costs aren't in our data, but reliability signals above are the closest proxy: fewer reported issues generally means lower repair costs over time.