Used 2021 Cadillac CT4 for SaleNationwide

How much does the 2021 Cadillac CT4 cost?

Prices have softened 8.49% compared to this time last year, making it a favorable time to shop this model year.

There are 314 listings available, which gives you a workable 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.

For 2021, it also gained wireless Apple CarPlay and Android Auto, and forward-collision warning plus automatic emergency braking became standard. The CT4’s appeal is broader than tech alone, though: it offers turbocharged four-cylinder engines, with stronger 2.7-liter versions bringing more performance, and the V-Series adds a more serious chassis and a 325-hp engine.

You should weigh that against the tradeoffs: the base model is described as sluggish, and the back seat is cramped. Even so, the CT4 makes sense if you want a premium small sedan with rear-drive dynamics, available all-wheel drive, and a strong mix of style and technology. 31.2% 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 presented as a compact luxury sedan with useful standard equipment and a strong technology story, including wireless smartphone integration and standard driver-assistance features. It also offers a range of turbocharged engines and available all-wheel drive, which broadens its appeal for different driving needs.

For used buyers, the main long-term ownership risk is that a premium small sedan can become expensive if you buy one with neglected maintenance or unresolved wear items, so condition matters a lot.

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

At 74.5% 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 bodywork, alignment, and signs of uneven wear. Focus on overall condition and repair quality, especially if you are comparing cars with similar prices.

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

This looks like a moderate market, so you can be selective without expecting every listing to be a bargain.

• Deal availability: 31.2% of listings are priced as good or great deals.
• Inventory: There are 314 listings available.
• Price trend: Prices have softened 8.49% compared with last year.
• Clean inventory: 74.5% of listings are accident-free.

If you find a listing below $25,204, 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 $25,204 sits slightly below last year's $27,544.

That price movement suggests the CT4 has softened enough to help you buy more carefully now, but it also means future resale may depend heavily on how well you preserve the car. If you keep mileage reasonable and maintenance documented, you should be in a better position when it is time to sell.

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:

• 31.2% of listings are priced as good or great deals.
• At 74.5% accident-free, a meaningful share of listings has prior incidents — history verification is especially important.
• Price trend: Prices have softened 8.49% compared with last year.

Consider the 2020 if:

• At $23,988, the 2020 costs less than the current year's $25,204 average.
• It offers a lower entry point with a sporty, premium feel.

The bottom line: The 2021 is the better primary choice if you want the updated equipment and a broader mix of style, tech, and driving character. If your priority is spending less up front, the 2020 is the more price-sensitive path and may be the smarter value play.

These recommendations are based on CarGurus' proprietary market data from September 29, 2026, CarGurus experts' opinions, and generative AI.