The short answer
The Acura RLX offers fuel economy, while the Genesis G80 excels at power instead. Choose the Acura RLX if you prioritize fuel economy in daily driving, or the Genesis G80 if power matters more for your needs. Both are covered by real owner reports on CarWizz.
Overall
Deeply divided sentiment for flagship sedan, polarizing owners between passionate enthusiasts praising underappreciated excellence versus skeptics questioning reliability and parts availability. Praised extensively for Sport Hybrid model's exceptional performance (377 hp combined output delivering thrilling acceleration), impressive fuel economy (26-30 MPG combined despite 377 hp), advanced Sport Hybrid SH-AWD system providing exceptional handling dynamics, plush comfortable ride quality, generous standard technology (backup camera, navigation, heads-up display, premium Krell audio), and quiet refined cabin. However, widespread criticism centers on problematic base model FWD (P-AWS) Precision All-Wheel Steer system requiring expensive repairs ($3,000+ parts alone), catastrophic engine seizures reported multiple examples without warning, parts scarcity for low-production model (approximately 1,700 Sport Hybrid units 2014-2020, 1,055 total RLX sold 2020), outdated infotainment lacking Apple CarPlay/Android Auto throughout entire production, premium pricing when new ($60,000-$65,000) unjustified versus competitors, and anonymous bland styling generating no emotional response.
Best version to buy
Sport Hybrid SH-AWD Advance (2014-2020) The Sport Hybrid model universally praised over base P-AWS version representing completely different driving experience. Sport Hybrid delivers 377 hp combined output (310 hp V6 + three electric motors), advanced torque-vectoring SH-AWD system, exceptional fuel economy (26-30 MPG combined), and eliminates problematic P-AWS system.
Known issues
Overall
Sentiment is predominantly positive, with owners praising the vehicle for its exceptional value proposition, luxurious and well-appointed interior, and strong reliability over multiple generations. The G80 is consistently described as a comfortable, quiet, and smooth-riding executive sedan that offers features and refinement comparable to established German rivals at a significantly lower price point. Positive long-term ownership experiences with models from 2011, 2015, 2016, and 2017 are noted, with many owners reporting trouble-free operation and becoming brand loyalists.
Best version to buy
Insufficient owner data available to declare a consensus "best" trim or powertrain. Feedback indicates strong appreciation for the 5.0L V8 model for its special character and the 3.3T/3.5TT engines for performance.
Known issues
The verdict
The Acura RLX is the better choice for most buyers.
It has better fuel economy on its best-equipped version than the Genesis G80, based on the data above. If power matters more to you than running costs, the Genesis G80 is worth a closer look instead.
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Which is more reliable, the Acura RLX or the Genesis G80?
Owner reports show similar reliability sentiment for the Acura RLX and the Genesis G80. Check the known issues listed above for specific differences between the two.
Which is better for families, the Acura RLX or the Genesis G80?
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 Acura RLX or the Genesis G80?
The Acura RLX is more fuel-efficient on paper: 11.9 L/100km combined versus 12.4-13.1 L/100km for the Genesis G80, based on the best-equipped catalogued version of each.
Which is cheaper to maintain, the Acura RLX or the Genesis G80?
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.