How much does the 2021 Cadillac CT4 cost?

Prices have softened 5.17% compared to this time last year, making it a favorable time to shop this model year.

There are 320 listings available, which suggests you have a workable amount of inventory to compare.

If you find a listing below $25,419.53, that's toward the low end of the year-round range and worth acting on quickly.

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 character, and the design is unapologetically Cadillac, with a blocky shape and T-shaped headlights and taillights that separate it from softer-looking rivals. It also offers a choice of turbocharged 2.0-liter or 2.7-liter four-cylinder engines, which helps the CT4 cover both everyday commuting and more energetic driving.

For 2021, the CT4 gained wireless Apple CarPlay and Android Auto compatibility, and forward-collision warning and automatic emergency braking became standard. General Motors’ Super Cruise semi-automated driving tech also became available that year. The CT4’s appeal is strengthened by its available all-wheel drive, its sporty drive modes, and the fact that even the base model includes an 8-inch touchscreen, a digital instrument cluster, and Active Noise Cancellation. Buyers looking for a more performance-focused version will also appreciate that the CT4 lineup includes a V-Series model with a stronger engine, upgraded suspension hardware, and performance-oriented details.

There are trade-offs, though. The base model is described as sluggish, and the back seat is cramped. Even so, the 2021 Cadillac CT4 remains distinctive because it combines rear-drive dynamics, sharp styling, and a strong technology story in a segment where many competitors lean more heavily toward conventional luxury-car formulas.

Deal availability: 26.9% of listings are priced as good or great deals.

Is the 2021 Cadillac CT4 reliable?

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 character, and the design is unapologetically Cadillac, with a blocky shape and T-shaped headlights and taillights that separate it from softer-looking rivals. It also offers a choice of turbocharged 2.0-liter or 2.7-liter four-cylinder engines, which helps the CT4 cover both everyday commuting and more energetic driving.

For 2021, the CT4 gained wireless Apple CarPlay and Android Auto compatibility, and forward-collision warning and automatic emergency braking became standard. General Motors’ Super Cruise semi-automated driving tech also became available that year. The CT4’s appeal is strengthened by its available all-wheel drive, its sporty drive modes, and the fact that even the base model includes an 8-inch touchscreen, a digital instrument cluster, and Active Noise Cancellation.

For used buyers, the main long-term ownership risk is that a compact luxury sedan with more complex tech and available performance hardware can be costlier 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 77.8% — always verify the vehicle history report.

You should prioritize a history report first, then inspect the car for signs of prior damage, uneven panel gaps, or inconsistent wear that could point to harder use. Focus closely on the condition of the interior electronics, driver-assist features, tires, and brakes, since those areas can reveal how well the car was maintained.

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 without feeling rushed.

• Deal availability: 26.9% of listings are priced as good or great deals.
• Inventory: There are 320 listings available.
• Price trend: Prices have softened 5.17% compared with last year.
• Clean inventory: 77.8% of listings are accident-free.

If you find a listing below $25,419.53, 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 $25,642 sits slightly below last year's $27,040.

That price movement suggests the CT4 has softened enough to help you buy more selectively today. If you sell later, your return will depend heavily on mileage, condition, and whether your car has the equipment shoppers want most. A well-kept example with strong history and desirable features should hold up better than a base car with higher wear.

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:

• 26.9% of listings are priced as good or great deals.
• Accident-free inventory is solid at 77.8% — always verify the vehicle history report.
• Price trend: Prices have softened 5.17% compared with last year.

Consider the 2020 if:

• At $24,393, the 2020 costs less than the current year's $25,642 average.
• It offers a lower-cost entry point with a familiar sporty foundation.

The bottom line:
Choose the 2021 if you want the stronger all-around package, especially the updated tech and safety equipment. If your priority is spending less up front, the 2020 is the better value path, but you should expect a less polished ownership experience.

These recommendations are based on CarGurus' proprietary market data from August 28, 2026, CarGurus experts' opinions, and generative AI.