The Best Used Cadillac Cars to Buy

Cadillac has built its reputation on premium comfort, refined design, and powerful engine options that appeal to both luxury and performance-minded buyers. As new-vehicle MSRPs continue to rise, late-model used Cadillacs offer strong value, advanced technology, and upscale features at more attainable price points. These five Cadillac car models combine desirability, reliability, and luxury appeal, making them excellent additions for dealers looking to stock in-demand used inventory.

2018 Cadillac Escalade

The 2018 Escalade is part of Cadillac’s fourth-generation full-size luxury SUV (2015–2020) and remains a top choice for customers seeking premium comfort, powerful towing capability, and bold road presence. It features a 6.2-liter V8 (420 hp) paired with an 8- or 10-speed automatic transmission, delivering 14–15 mpg city / 21 mpg highway. Seating capacity ranges from seven to eight passengers, and higher-trim models offer Magnetic Ride Control, 4WD, and premium interior upgrades. The 2018 Escalade earned an 8.0 out of 10 from U.S. News & World Report, supported by its luxury features and resale demand¹.

2018 Cadillac XTS

The 2018 XTS is a full-size luxury sedan known for exceptional ride comfort and interior refinement. It offers two powertrains: a 3.6-liter V6 (304 hp) or a twin-turbo V6 (410 hp in V-Sport models). Fuel economy is rated around 19 mpg city / 28 mpg highway. Customers seeking a quiet cabin, advanced safety tech, and limousine-style comfort will appreciate this model. The XTS earned a 4.3/5 reliability score on Kelley Blue Book, making it a strong option for buyers who prefer traditional luxury sedans over performance-leaning competitors².

2018 Cadillac CTS

As Cadillac’s midsize luxury performance sedan, the 2018 CTS offers sport-inspired driving dynamics with a premium feel. Powertrain options include a 2.0-liter turbo four-cylinder (268 hp), 3.6-liter V6 (335 hp), and 3.6-liter twin-turbo V6 (420 hp in the CTS V-Sport). Fuel efficiency ranges from 19–22 mpg city / 27–30 mpg highway depending on engine choice. Handling and chassis tuning received high marks, earning the model an 8.2/10 performance rating from U.S. News & World Report³.

2018 Cadillac CT6

The 2018 CT6 sits at the top of Cadillac’s sedan lineup as an executive-class flagship designed to compete with German luxury brands. Powertrains include 2.0-liter turbo (265 hp), 3.6-liter V6 (335 hp), and 3.0-liter twin-turbo V6 (404 hp). Fuel economy reaches 18–22 mpg city / 27–30 mpg highway depending on configuration. Known for its lightweight aluminum-intensive chassis, advanced Super Cruise driver-assistance availability, and spacious interior, the 2018 CT6 earned an 8.1/10 from U.S. News & World Report⁴.

2021 Cadillac CT4

The 2021 CT4 is a compact luxury sports sedan that replaced the ATS and competes directly with BMW 3-series, Audi A4, and Mercedes C-Class. Engine options include a 2.0-liter turbo four-cylinder (237 hp) and a 2.7-liter turbocharged four-cylinder (325 hp in V-Series). Fuel economy is rated 20–23 mpg city / 29–34 mpg highway⁵. 

Find the Best Used Cadillac Car Inventory with ACV Auctions

From full-size luxury SUVs like the Escalade to premium sedans such as the CT6 and CT4, ACV Auctions provides dealers with nationwide access to in-demand used Cadillac inventory. Each vehicle is backed by a transparent condition report featuring 60+ images (interior, exterior, and engine), OBD-II diagnostics, undercarriage views, and engine audio so you know exactly what you are bidding on. Sign up with ACV Auctions today to confidently source high-quality Cadillac vehicles for your lot.

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Sources

1. "2018 Cadillac Escalade." US News and World Report, 28 Jun. 2019, cars.usnews.com/cars-trucks/cadillac/escalade/2018. Accessed 18 Nov. 2025.
   
2. "Used 2018 Cadillac XTS." Kelley Blue Book, 2 Dec. 2019, www.kbb.com/cadillac/xts/2018/. Accessed 18 Nov. 2025.
   
3. "2018 Cadillac CTS." US News and World Report, 28 Jun. 2019, cars.usnews.com/cars-trucks/cadillac/cts/2018. Accessed 18 Nov. 2025.
   
4. "2018 Cadillac CT6." US News and World Report, 28 Jun. 2019, cars.usnews.com/cars-trucks/cadillac/ct6/2018. Accessed 18 Nov. 2025.
   
5. "2021 Cadillac CT4 Values." JD Power, 1 Jan. 2019, www.jdpower.com/cars/2021/cadillac/ct4. Accessed 18 Nov. 2025.