Cadillac
CT6
Volvo
S90
Cadillac CT6 vs Volvo S90: 2023 Comparison
The short answer
Based on available data, the Cadillac CT6 comes out ahead of the Volvo S90 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
CT6
Overall
Mixed sentiment with a clear divide between appreciation for the vehicle's core attributes and significant concerns over reliability and long-term viability. The CT6 is widely praised for its driving dynamics, particularly on the advanced Omega platform, which is noted for excellent handling and weight transfer. It is considered a cutting-edge luxury machine offering strong value, especially when purchased used, with powerful engine options (notably the 3.0L Twin-Turbo V6 and the rare 4.2L Twin-Turbo "Blackwing" V8) providing substantial performance.
Best version to buy
Insufficient owner data available to declare a consensus "best" trim. The high-performance CT6-V with the 4.2L Twin-Turbo V8 (Blackwing) is mentioned as a rare, fun halo car but is universally flagged for severe reliability concerns and future parts scarcity.
Known issues
- ⚠Unreliable electronics and poor build quality: electronics stop working randomly all over the car. Frequency: very frequent.
- ⚠Problematic 8-speed automatic transmission (8L45 and 8L90): harsh shifting, jerkiness, especially in 2nd gear, laggy response, subject to class action lawsuits. Frequency: very frequent.
- ⚠Severe engine cooling issues (CT6-V 4.2L Twin-Turbo V8): engines can burst into flames after hard driving, leading to parking outside as a precaution; described as a fundamental design flaw. Frequency: very frequent.
S90
Overall
Mixed to positive sentiment, heavily dependent on model year and powertrain. The S90 is widely praised for its exceptional value on the used market, offering flagship-level comfort, spacious interiors, industry-leading safety systems, and an acclaimed Bowers & Wilkins audio system at a significant discount from MSRP. Long-term owner reports frequently highlight superb highway comfort, excellent seats, and strong fuel economy from diesel (D4) and base gasoline (T5) variants.
Best version to buy
2018 and newer model years are strongly recommended over 2016-2017 models, as most early teething issues (e.g., air compressor faults, software bugs) were reportedly addressed. For gasoline models, the simpler T5 engine is suggested over the more complex T6 for reliability.
Known issues
- ⚠Rear suspension air compressor failure: triggers diagnostic codes and blown fuses, subject to a 7-year/unlimited-mileage extended warranty for 2017-2020 models. Frequency: recurrent.
- ⚠Pilot Assist system imperfections: described as "pinballing" between lane markings, poor handling of highway merges/off-ramps, and positioning too close to the center line. Frequency: recurrent.
- ⚠Brake rotor warping: premature warping and vibration, particularly on front axles. Frequency: recurrent.
The verdict
The Cadillac CT6 is the better choice for most buyers.
It has more power on its best-equipped version than the Volvo S90, based on the data above. If efficiency matters more to you than outright power, the Volvo S90 is worth a closer look instead.
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Frequently asked questions
Which is more reliable, the Cadillac CT6 or the Volvo S90?
Owner reports show similar reliability sentiment for the Cadillac CT6 and the Volvo S90. Check the known issues listed above for specific differences between the two.
Which is better for families, the Cadillac CT6 or the Volvo S90?
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 Cadillac CT6 or the Volvo S90?
Fuel consumption data is limited for one or both models. Check the specs table above for the figures available on each catalogued version.
Which is cheaper to maintain, the Cadillac CT6 or the Volvo S90?
Exact maintenance costs aren't in our data, but owner reports mention cost-related concerns more often for the Cadillac CT6 than the Volvo S90. See the known issues comparison above.