Used 2021 Cadillac CT4 for SaleNationwide

How much does the 2021 Cadillac CT4 cost?

Prices have softened 7.72% compared to this time last year, making it a favorable time to shop this model year.

There are 313 listings available, which suggests you have some room to compare prices and condition.

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 and stiff chassis give it a true sport-sedan feel, and its styling helps it look different from softer rivals.

For 2021, wireless Apple CarPlay and Android Auto were added, and forward-collision warning and automatic emergency braking became standard. That makes it easier to live with than the original launch version, and it should appeal most if you want a premium compact sedan that feels more driver-focused than many alternatives.

Market availability: 31.0% of listings are priced as good or great deals.

Is the 2021 Cadillac CT4 reliable?

The 2021 Cadillac CT4 is presented as a compact luxury sedan with a strong personality, a rear-drive layout, and a chassis tuned for a sport-sedan feel. It also gained standard forward-collision warning and automatic emergency braking for 2021, which adds useful everyday confidence.

For used buyers, the main long-term ownership risk is that a premium compact sedan with a more performance-oriented setup can be less forgiving if it has been neglected or driven hard.

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

At 74.4% accident-free, a meaningful share of listings has prior incidents — history verification is especially important.

You should run a vehicle history report before you commit, then prioritize a pre-purchase inspection that checks for prior bodywork, uneven panel gaps, and signs of poor repairs. Focus closely on overall condition, because a clean-looking listing can still hide accident-related issues or wear that affects long-term ownership.

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 carefully and still find worthwhile opportunities.

• Deal availability: 31.0% of listings are priced as good or great deals.
• Inventory: There are 313 listings available.
• Price trend: Prices have softened 7.72% compared with last year.
• Clean inventory: 74.4% of listings are accident-free.

If you find a listing below $25,081, 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 $25,174 sits slightly below last year's $27,281.

That price movement suggests the CT4 has softened enough to create a more approachable entry point for buyers today. If you plan to sell later, you should expect resale value to depend heavily on mileage, condition, and whether the car has a clean history. Well-kept examples should hold up better than neglected ones, but the recent decline means you should not expect a strong short-term appreciation story.

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:

• 31.0% of listings are priced as good or great deals.
• At 74.4% accident-free, a meaningful share of listings has prior incidents — history verification is especially important.
• Price trend: Prices have softened 7.72% compared with last year.

Consider the 2020 if:

• At $24,321, the 2020 costs less than the current year's $25,174 average.
• It offers a lower entry price with a more performance-focused personality.

The bottom line:
Choose the 2021 if you want the better-balanced buy, especially because it brings updated tech and standard safety equipment while still sitting in a softened price range. If your priority is saving money upfront, the 2020 is the better secondary path, but you should be comfortable giving up some of the 2021's added convenience and safety improvements.

These recommendations are based on CarGurus' proprietary market data from October 13, 2026, CarGurus experts' opinions, and generative AI.