Used 2021 Cadillac CT4 for Sale near Illinois

How much does the 2021 Cadillac CT4 cost?

Prices have softened 6.76% compared to this time last year, making it a favorable time to shop this model year.

There are 322 listings available, which gives you a decent amount of inventory to compare before you buy.

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, while forward-collision warning and automatic emergency braking became standard. The CT4’s appeal is broader than tech alone, though: it offers turbocharged four-cylinder engines, stronger 2.7-liter options for more performance, and a V-Series setup for buyers who want a more serious chassis and 325-hp output.

The tradeoffs are clear, too. 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. 31.1% 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 presented as a compact luxury sedan with useful standard tech and a straightforward turbo-four lineup, which can make it appealing if you want a modern-feeling daily driver. It also adds standard forward-collision warning and automatic emergency braking for the model year, which strengthens its everyday usability.

At the same time, the CT4’s premium positioning means you should expect ownership to hinge on condition, maintenance history, and how the car was used before you buy it. For used shoppers, the biggest long-term risk is ending up with a neglected example that erodes the value of the car’s upscale features.

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

Accident-free inventory is solid at 77.6% — always verify the vehicle history report.

You should prioritize a history report first, then focus your inspection on signs of prior damage, uneven wear, or inconsistent maintenance. Because this is a compact luxury sedan with available performance variants, condition matters a lot: a clean-looking car can still hide expensive issues if it was driven hard or repaired poorly.

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

This is a moderate, selective buyer’s market, so you can shop carefully and still find worthwhile options.

• Deal availability: 31.1% of listings are priced as good or great deals.
• Inventory: There are 322 listings available.
• Price trend: Prices have softened 6.76% compared with last year.
• Clean inventory: 77.6% 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 $25,598 sits slightly below last year's $27,453.

That price movement suggests the CT4 has softened enough to help you buy in at a more favorable point than a year ago. If you plan to sell later, the current market indicates you may not recover as much as earlier owners did, especially if your car is a base model or lacks desirable equipment.

For a future seller, the best protection is buying a clean, well-kept example now and keeping it in strong condition. A car with the right history and desirable features should hold up better than one that starts out as a bargain but needs work.

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:

• 31.1% of listings are priced as good or great deals.
• Accident-free inventory is solid at 77.6% — always verify the vehicle history report.
• Price trend: Prices have softened 6.76% compared with last year.

Consider the 2020 if:

• At $23,951, the 2020 costs less than the current year's $25,598 average.
• It offers a sporty, accessible entry point with a fresh nameplate and a relatively low starting price.

The bottom line: If you want the better-balanced shopping case, the 2021 is the stronger primary target because it brings more standard tech and a more appealing market position. If your priority is saving money above all else, the 2020 is the better secondary path, especially if you find one in excellent condition.

These recommendations are based on CarGurus' proprietary market data from September 15, 2026, CarGurus experts' opinions, and generative AI.