Used 2020 Cadillac CT4 for SaleNationwide

How much does the 2020 Cadillac CT4 cost?

Prices have softened 6.70% compared to this time last year, making it a favorable time to shop this model year.

There are 217 listings available, which gives you a modest amount of inventory to compare before you buy.

Is the 2020 Cadillac CT4 a good car?

Generally — the 2020 Cadillac CT4 earns 4/5 from users and 6.33/10 from our experts. The standout strength is Technology at 9/10.

It’s positioned as an entry-level luxury sport sedan with a sporty character and a relatively accessible starting point, and the data backs up that appeal with strong tech and multiple powertrain options. At the same time, the expert review points to a fairly pedestrian driving experience and a value equation that can feel thin once you start adding equipment.

The main trade-offs are the lack of standard advanced safety features and the poor value for money noted by our experts. If you want a compact luxury sedan with a sporty feel and strong tech, it fits that use case better than shoppers who prioritize refinement and standard equipment.

Market signal: 31.3% of listings are priced as good or great deals.

Is the 2020 Cadillac CT4 reliable?

Owners rate it 4/5, a solid signal of long-term satisfaction.

The CT4 is described as a balanced, rear-drive luxury sport sedan with enjoyable driving dynamics, and the expert review also notes that its standard turbocharged four-cylinder engine is the main drag on the ownership experience. That matters because the car’s appeal depends heavily on how much you value its chassis and tech versus its refinement.

The performance notes also point to a stable, secure highway character and a nearly 50:50 weight distribution, which supports the idea that the platform itself is fundamentally sound. On the cost side, the review suggests Cadillac’s optional-equipment approach can erode value, so used ownership risk is less about basic durability than about whether you’ll be satisfied with the car’s refinement and equipment level over time.

What should I look for when buying a used 2020 Cadillac CT4?

At 74.2% accident-free, a meaningful share of listings has prior incidents — history verification is especially important.

You should run a vehicle history report before you get serious about any listing, then prioritize a pre-purchase inspection if the car has had prior damage or if the equipment level is unclear. Focus your inspection on condition, completeness of features, and whether the car matches the trim and option content you expect.

Key things to evaluate:

• Trim level: The standard Luxury trim is the entry point, while Premium Luxury, Sport, and V-Series add equipment and character; the base trim is where you’re most likely to feel the gap in standard features.
• Powertrain: The standard turbocharged 2.0-liter four-cylinder makes 237 horsepower and 258 pound-feet of torque, and an available turbocharged 2.7-liter four-cylinder raises output to 325 hp and 380 lb-ft.
• Safety package: The car does not come with standard advanced driver-assistance systems, and the full set requires stepping up to Premium Luxury, Sport, or V-Series and adding the Driver Awareness Plus Package and the Driver Assist Package.
• Infotainment: You get an 8.0-inch touchscreen, standard Apple CarPlay and Android Auto, and connected services through OnStar; the system also supports wireless smartphone charging when equipped.
• Fuel efficiency: The review notes an official EPA combined rating of 26 mpg, and the test car averaged 25.5 mpg over 141.9 miles.

Which 2020 Cadillac CT4 trim should I buy?

The 2020 Cadillac CT4 is offered in 4 trim levels: Luxury, Premium Luxury, Sport, V-Series.

Here's the short version:

• Luxury: This is the entry point, so it makes sense if you want the lowest starting price and are comfortable with the most basic equipment set.
• Premium Luxury: This is the best-value choice for most shoppers because it adds the upscale equipment and comfort content that help the CT4 feel more like a luxury car.
• Sport: Choose this if you want the firmer chassis tuning and a more driver-focused setup.
• V-Series: This is the pick if you want the most performance-oriented version, with the strongest hardware and the most aggressive setup in the lineup.

For safety-package shoppers, remember that the full driver-assistance set requires Premium Luxury, Sport, or V-Series, plus the Driver Awareness Plus Package and the Driver Assist Package.

Is now a good time to buy a used 2020 Cadillac CT4?

This is a moderate, selective buyer’s market, so you have room to shop carefully without feeling rushed.

• Deal availability: 31.3% of listings are priced as good or great deals.
• Inventory: There are 217 listings available.
• Price trend: Prices have softened 6.70% compared with last year.
• Clean inventory: 74.2% of listings are accident-free.

If you find a listing below $23,855, that's toward the low end of the year-round range and worth acting on quickly.

What is the 2020 Cadillac CT4's resale value?

The current average of $23,988 sits slightly below last year's $25,711.

That decline suggests the CT4 has softened in the used market, which can be good news if you’re buying now but less favorable if you’re planning to sell soon. For a future seller, the current trend means you should expect pricing pressure unless your car is especially clean, well equipped, and attractively priced.

The upside is that the CT4 still has a clear niche as a compact luxury sport sedan with strong tech and rear-drive appeal, which can help it hold interest among the right shoppers. Vehicles with solid owner satisfaction ratings, like this model year's 4/5, tend to retain buyer demand, which supports resale value over time.

Is the 2020 Cadillac CT4 safe?

The 2020 Cadillac CT4 earns a 7/10 safety score from our experts.

It comes without any standard advanced driving-assistance systems, so you need to move up to Premium Luxury, Sport, or V-Series and then add the Driver Awareness Plus Package and the Driver Assist Package to get the full set. With the test car’s package mix, it included lane-departure warning, lane-keeping assistance, blind-spot and lane-change warning, rear cross-traffic warning, automatic high-beam headlights, and the Safety Alert seat.

That setup still leaves important gaps if you don’t add the full package, including adaptive cruise control, all-speed automatic forward emergency braking, and a rear emergency braking system. The review also notes that crash-test results were not available at the time.

Should I buy a 2020 Cadillac CT4 or consider a different year?

If you're weighing the 2020 against nearby model years, here's how to think about it:

Choose the 2020 if:

• 31.3% of listings are priced as good or great deals.
• At 74.2% accident-free, a meaningful share of listings has prior incidents — history verification is especially important.
• Price trend: Prices have softened 6.70% compared with last year.
• Owners rate it 4/5 — a solid satisfaction signal.
• The expert review says the CT4’s base price is surprisingly low, but its value equation is weakened by missing standard features and a lack of refinement.

The bottom line: If you want the lowest entry price into this body style and can live with the CT4’s compromises, the 2020 can make sense as a selective buy. If you’re more focused on standard safety equipment, refinement, and overall value, a newer model year is the better path, especially if you can stretch for a better-equipped example.

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