Used 2021 Cadillac CT4 for Sale nearMadison, WI

How much does the 2021 Cadillac CT4 cost?

Prices have softened 7.35% compared to this time last year, making it a favorable time to shop this model year.

There are 323 listings available, which gives you a meaningful amount of inventory to compare.

Is the 2021 Cadillac CT4 a good car?

The 2021 Cadillac CT4 stands out as a compact luxury sedan with a distinctly American personality. Its front-engine, rear-wheel-drive layout gives it a true sport-sedan character, and all-wheel drive is available if you want extra traction. Cadillac also gave it a sharp, blocky design that helps it look different from smoother rivals.

For 2021, the CT4 gained wireless Apple CarPlay and Android Auto, and forward-collision warning plus automatic emergency braking became standard. Super Cruise also became available, and the model offers turbocharged four-cylinder engines, including stronger 2.7-liter versions, while the V-Series adds more serious performance hardware. The tradeoffs are clear: the base model is described as sluggish, and the back seat is cramped.

If you want a premium small sedan with rear-drive dynamics, available all-wheel drive, and a strong mix of style and technology, the CT4 fits that brief well. 29.1% of listings are priced as good or great deals, which gives you some room to shop selectively.

Is the 2021 Cadillac CT4 reliable?

The 2021 Cadillac CT4 is positioned as a compact luxury sedan with useful standard tech and a straightforward gasoline powertrain. Its appeal comes more from driving character, available performance, and equipment than from any standout reliability story.

For used buyers, the main long-term ownership risk is that a premium small sedan can become more expensive to keep if prior maintenance was inconsistent or if you choose a higher-output version.

What should I look for when buying a used 2021 Cadillac CT4?

Accident-free inventory is solid at 76.5% — always verify the vehicle history report.

You should prioritize a history report first, then focus on a pre-purchase inspection that checks for signs of prior damage, uneven wear, and deferred maintenance. Pay close attention to the condition of the brakes, tires, electronics, and interior controls, since those areas can reveal how carefully the car was treated.

Is now a good time to buy a used 2021 Cadillac CT4?

This looks like a moderate, selective buyer's market, so you can shop patiently and still find worthwhile listings.

• Deal availability: 29.1% of listings are priced as good or great deals.
• Inventory: There are 323 listings available.
• Price trend: Prices have softened 7.35% compared with last year.
• Clean inventory: 76.5% of listings are accident-free.

If you find a listing below $25,418, that's toward the low end of the year-round range and worth acting on quickly.

What is the 2021 Cadillac CT4's resale value?

The current average of $25,425 sits slightly below last year's $27,442.

That price movement suggests the CT4 has softened enough to create a better entry point for you as a buyer. If you plan to sell later, the current market implies you should expect more modest resale strength than a year ago. Well-kept examples with clean history and desirable equipment should hold up better than base cars with higher mileage.

Should I buy a 2021 Cadillac CT4 or consider a different year?

If you're weighing the 2021 against nearby model years, here's how to think about it:

Choose the 2021 if:

• 29.1% of listings are priced as good or great deals.
• Accident-free inventory is solid at 76.5% — always verify the vehicle history report.
• Price trend: Prices have softened 7.35% compared with last year.

Consider the 2020 if:

• At $23,967, the 2020 costs less than the current year's $25,425 average.
• It offers a lower-cost entry point with sporty character and accessible pricing.

The bottom line: The 2021 is the better pick if you want the newer model-year mix of standard tech, available Super Cruise, and a broader appeal in the used market. If your priority is saving money up front, the 2020 is the more budget-friendly path, especially if you can live with its older setup and mixed strengths.

These recommendations are based on CarGurus' proprietary market data from September 22, 2026, CarGurus experts' opinions, and generative AI.