Audi
A7
Cadillac
CT6
Audi A7 vs Cadillac CT6: 2023 Comparison
The short answer
Based on available data, the Cadillac CT6 comes out ahead of the Audi A7 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
A7
Overall
Overwhelmingly positive sentiment regarding the driving experience, design, and long-term reliability of the 3.0-liter supercharged V6 gasoline engine (3.0T) and 3.0-liter TDI diesel powertrains. The A7 is consistently praised for its gorgeous, timeless design, exceptional comfort, refined handling with Quattro all-wheel drive, and practical hatchback body style. Owner feedback indicates high satisfaction with the vehicle's performance as a daily driver and long-distance cruiser, with specific acclaim for its quiet cabin, comfortable seats, and high-quality interior build.
Best version to buy
The 2016-2018 model years with the 3.0T supercharged V6 gasoline engine (CREC version, 333 hp) are most frequently recommended. This iteration is noted for having design revisions that address earlier potential issues like carbon buildup (via dual port and direct injection) and updated chain tensioners.
Known issues
- ⚠Higher maintenance and repair costs compared to mainstream brands. Labor and part costs at dealerships are noted as expensive. Frequency: very frequent.
- ⚠Water pump and PCV (Positive Crankcase Ventilation) valve failure. Common replacement items typically needed between 60,000-100,000 miles (97,000-161,000 km). Frequency: very frequent.
- ⚠Emissions system complexity (TDI models). The Diesel Particulate Filter (DPF), Selective Catalytic Reduction (SCR) system, EGR, and associated sensors are potential failure points with high replacement costs, especially beyond 100,000 miles…
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.
The verdict
The Audi A7 is the better choice for most buyers.
It has stronger reliability sentiment in owner reports than the Cadillac CT6, based on the data above. If the specific known issues on the Audi A7 are a dealbreaker, the Cadillac CT6 is worth a closer look instead.
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Frequently asked questions
Which is more reliable, the Audi A7 or the Cadillac CT6?
Owner reports lean more positive on reliability for the Audi A7 than the Cadillac CT6. See the known issues comparison above for the specific concerns owners report on each.
Which is better for families, the Audi A7 or the Cadillac CT6?
Both seat a similar number of passengers based on our data. The Audi A7 is classed as a Liftback, the Cadillac CT6 as a Sedan, which affects cargo space and ride height for family use.
Which has better fuel economy, the Audi A7 or the Cadillac CT6?
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 Audi A7 or the Cadillac CT6?
Exact maintenance costs aren't in our data, but owner reports mention cost-related concerns more often for the Cadillac CT6 than the Audi A7. See the known issues comparison above.