Used 2020 GMC Acadia for Sale nearMilwaukee, WI

How much does the 2020 GMC Acadia cost?

Prices have softened 10.66% compared to this time last year, making it a favorable time to shop this model year.

There are 2,706 listings available, which suggests you have a solid amount of inventory to compare.

Is the 2020 GMC Acadia a good car?

Yes — you rate it 4.94/5, and the expert rating is 7.00/10. The model scores 8/10 across Look and feel, Form and function, and Technology.

Drivers consistently praise the Acadia for its smooth and quiet ride, spacious interior, and impressive features. The roomy third row and easy-to-use technology also come through as recurring strengths, especially for family trips.

The trade-offs are clear: advanced safety features are not standard, and performance is fairly pedestrian. That matters most if you want a more engaging drive or expect a lot of driver-assistance equipment without moving up the trim ladder.

For you, the appeal is strongest if you want a practical three-row SUV with approachable tech and a family-friendly layout. The market also shows 31.9% good or great deals, which gives you room to shop selectively.

Is the 2020 GMC Acadia reliable?

Owners rate it 4.94/5, a strong signal of long-term satisfaction.

The user feedback points to a dependable, trouble-free ownership experience, with drivers repeatedly highlighting comfort, smoothness, and confidence in day-to-day use. That kind of praise usually matters most when you want a vehicle you can count on for family duty and regular commuting.

The expert evaluation also supports that impression by describing the Acadia as mechanically agreeable and easy to live with. GMC’s first scheduled maintenance visit is included at no charge, which helps early ownership costs a bit.

For used buyers, the main long-term risk is less about outright durability and more about whether the vehicle was maintained well and equipped the way you want.

What should I look for when buying a used 2020 GMC Acadia?

At 67.9% accident-free, a meaningful share of listings has prior incidents — history verification is especially important.

You should start with a vehicle-history report and then prioritize a careful inspection of body panels, paint consistency, and signs of prior repair. Because the Acadia’s value can vary a lot by condition and equipment, it’s worth focusing on how well the interior, electronics, and safety features have been preserved.

Pay extra attention to whether the trim level matches your needs, since some important safety features are not standard on every version. It also helps to confirm that the infotainment and driver-assistance systems work properly, especially if the vehicle has higher-mileage family use.

Key things to evaluate:

• Trim level: The Acadia comes in SL, SLE, SLT, new rugged AT4, and luxurious Denali trim levels. The base setup is more limited on advanced safety equipment, while Denali adds a more upscale cabin treatment and AT4 brings a tougher appearance and greater off-road focus.
• Powertrain: Lower trims have a 193-horsepower 2.5-liter four-cylinder engine. SLT gets a turbocharged 2.0-liter four-cylinder with 230 hp and 258 pound-feet of torque. AT4 and Denali use a 310-hp 3.6-liter V6, paired with a new nine-speed automatic transmission across the lineup.
• Safety package: Blind-spot warning and rear cross-traffic warning are standard from the base Acadia SL up. Forward collision warning and low-speed automatic emergency braking require at least SLT or AT4, and the Driver Alert Package adds lane-departure warning, lane-keeping assistance, pedestrian braking, parking sensors, automatic high-beam headlights, and a head-up display. Enhanced automatic emergency braking is exclusive to Denali.
• Infotainment: Every 2020 Acadia includes Bluetooth, Apple CarPlay, Android Auto, and GMC Connected Services with a 4G LTE WiFi hotspot. Versions with an 8-inch touchscreen get a higher-resolution display, a simpler interface, and improved voice recognition.
• Fuel efficiency: The test vehicle returned 21 mpg in combined driving, and the expert observed 20.1 mpg in mixed use.

Which 2020 GMC Acadia trim should I buy?

The 2020 GMC Acadia is offered in 5 trim levels: SL, SLE, SLT, AT4, and Denali.

Here's the short version:

• SL: This is the entry point, and it gives you the core Acadia experience with standard blind-spot warning and rear cross-traffic warning. It makes sense if you want the lowest-cost way into the lineup, but you’ll need to move up for more advanced driver assistance.
• SLE: This trim keeps the Acadia’s practical family layout and easy-to-use tech while staying close to the base formula. It’s a sensible choice if you want the model’s strengths without paying for luxury extras.
• SLT: This is the best-value trim for many shoppers because it adds the turbocharged 2.0-liter engine and unlocks access to more important safety equipment. If you want a stronger all-around balance of equipment and value, this is the one to focus on.
• AT4: This is the rugged choice, with the V6, dual-clutch AWD, all-terrain tires, and a blacked-out appearance. It suits you best if you want the Acadia’s family utility with a more adventurous look and capability.
• Denali: This is the upscale pick, with the V6, premium cabin touches, and exclusive access to enhanced automatic emergency braking. Choose it if you want the most luxurious Acadia and are willing to pay for it.

The safety-package gap is important here: forward collision warning and low-speed automatic emergency braking are not standard on the lower trims, so you should verify equipment carefully before buying.

Is now a good time to buy a used 2020 GMC Acadia?

This is a moderate, selective buyer’s market, so you can shop patiently but should move quickly on the right listing.

• Deal availability: 31.9% of listings are priced as good or great deals.
• Inventory: There are 2,706 listings available.
• Price trend: Prices have softened 10.66% compared with last year.
• Clean inventory: 67.9% of listings are accident-free.

If you find a listing below $20,143, that's toward the low end of the year-round range and worth acting on quickly.

What is the 2020 GMC Acadia's resale value?

The current average of $20,148 sits slightly below last year's $22,551.

That decline suggests the market has already adjusted downward, which can help you buy at a more favorable point in the cycle. For a future seller, it also means you should expect resale value to depend heavily on condition, trim, and equipment rather than on broad market momentum alone.

Well-equipped versions with strong appeal should hold up better than stripped examples, especially if they have clean history and desirable safety or luxury features. The Acadia’s broad family appeal helps, but value-conscious shoppers will still compare it closely with other midsize SUVs.

Vehicles with strong owner satisfaction ratings, like this model year's 4.94/5, tend to retain buyer demand, which supports resale value over time.

Is the 2020 GMC Acadia safe?

The 2020 Acadia earns five-star ratings in most NHTSA assessments, plus a four-star rollover resistance rating. The IIHS gives it high marks in other tests, though its data is incomplete for headlight performance and front-passenger small-overlap frontal protection.

It earns a 6/10 safety score from our experts.

The standard safety equipment includes a rear-seat reminder system, Teen Driver technology, automatic collision notification, SOS emergency calling, blind-spot warning, and rear cross-traffic warning. That’s a decent baseline, but the more useful collision-avoidance features still require an upgrade.

Forward collision warning and low-speed automatic emergency braking are not standard on the base trim, and the enhanced automatic emergency braking system is exclusive to Denali. That trim-level gap is the main safety caveat you should keep in mind when shopping used.

Should I buy a 2020 GMC Acadia 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:

• 31.9% of listings are priced as good or great deals.
• At 67.9% accident-free, a meaningful share of listings has prior incidents — history verification is especially important.
• Price trend: Prices have softened 10.66% compared with last year.
• Owners rate it 4.94/5 — a strong satisfaction signal.
• The 2020 refresh adds bolder styling, a new AT4 trim, a turbocharged four-cylinder, a nine-speed automatic, and updated technology.

Consider the 2019 if:

• At $17,186, the 2019 costs less than the current year's $20,148 average.
• It feels more upscale than many rivals.

The bottom line: If you want the updated styling, newer tech, and broader trim mix, the 2020 is the better all-around pick. If your priority is spending less up front, the 2019 is the smarter value play, especially if you find one in clean condition with the equipment you want.

These recommendations are based on CarGurus' proprietary market data from September 22, 2026, CarGurus experts' opinions, and generative AI.