Used 2021 Cadillac CT4 for Sale near Illinois

How much does the 2021 Cadillac CT4 cost?

Prices have softened 6.86% compared to this time last year, making it a favorable time to shop this model year.

There are 317 listings available, which suggests you should have a workable range of choices.

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: you also get a choice of 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.

The tradeoffs are clear, though. The base model is described as sluggish, and the back seat is cramped. Even so, 31.9% 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 safety and convenience upgrades, plus available all-wheel drive and a straightforward turbocharged engine lineup. That combination points to a car that should make sense if you want a premium small sedan with a strong feature set and a distinctive driving layout.

For used buyers, the main long-term ownership risk is that a luxury sedan with performance-oriented hardware can become more expensive to keep in top shape if prior maintenance was inconsistent.

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

Accident-free inventory is solid at 78.5% — always verify the vehicle history report.

You should also prioritize a pre-purchase inspection so you can check for wear, prior repairs, and any signs of neglect. Focus on overall condition, since a premium sedan like this can vary a lot depending on how carefully it was maintained and driven.

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 with some leverage if you stay patient.

• Deal availability: 31.9% of listings are priced as good or great deals.
• Inventory: There are 317 listings available.
• Price trend: Prices have softened 6.86% compared with last year.
• Clean inventory: 78.5% 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 $25,572 sits slightly below last year's $27,456.

That price movement suggests the CT4 has become more approachable for you as a buyer, but it also means a future seller may face a softer market than before. If you buy well now, you may be starting from a more favorable entry point than someone who paid closer to last year's average.

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:

• 31.9% of listings are priced as good or great deals.
• Accident-free inventory is solid at 78.5% — always verify the vehicle history report.
• Price trend: Prices have softened 6.86% compared with last year.

Consider the 2020 if:

• At $23,981, the 2020 costs less than the current year's $25,572 average.
• It offers a lower-cost entry point with a sporty, accessible luxury-sedan feel.

The bottom line: You should lean toward the 2021 if you want the stronger shopping environment, newer standard tech, and a broader set of well-priced listings. If your priority is saving money up front, the 2020 is the better secondary path because it undercuts the current year's average by a meaningful margin.

These recommendations are based on CarGurus' proprietary market data from September 11, 2026, CarGurus experts' opinions, and generative AI.