Used 2018 GMC Acadia for Sale nearSaint Louis, MO

How much does the 2018 GMC Acadia cost?

Prices have softened 11.54% compared to this time last year, making it a favorable time to shop this model year.

There are 2,686 listings available, which suggests solid inventory for shoppers comparing prices and trims.

Is the 2018 GMC Acadia a good car?

Yes — the 2018 GMC Acadia earns a 4.8/5 user rating, and our experts rate it 7.2/10. The model scores 8/10 across Form and function and Safety.

Owners consistently praise the spacious, comfortable interior, the roomy design, and the family-friendly layout. The review summary also points to a safe driving experience and a useful array of features, which fits the Acadia’s role as a three-row crossover for families who want comfort and versatility.

That said, the overview makes clear that you should weigh the Acadia’s strengths against its compromises: it’s more versatile than before, but it still asks you to balance space, towing, and efficiency against the smaller footprint. With 33.6% of listings marked as good or great deals, there’s meaningful market opportunity if you shop carefully.

Is the 2018 GMC Acadia reliable?

Owners rate it 4.8/5, a strong signal of long-term satisfaction.

The owner feedback points to a vehicle people feel good about living with over time, especially because it’s described as spacious, comfortable, and family-friendly. The expert notes also reinforce that the Acadia’s improved handling, braking, and fuel economy come from a lighter design, which supports the sense that it’s built to be a practical long-term family hauler.

The main ownership risk for used buyers is making sure the specific vehicle you choose has been maintained well and hasn’t been overworked, especially if you plan to rely on it for family duty or towing.

What should I look for when buying a used 2018 GMC Acadia?

At 59.5% 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 thorough inspection of bodywork, safety equipment, and interior condition. Because this model is often used as a family vehicle, it’s smart to focus on signs of wear in the seats, cargo area, and third row, along with any evidence of prior repairs.

Key things to evaluate:

• Trim level: The SL trim is the most basic version, with the 2.5-liter engine, front-wheel drive, a 7-inch touchscreen, Android Auto, Apple CarPlay, and a 4G LTE Wi-Fi hotspot. The SLE adds all-wheel drive availability and unlocks the V6, while the SLE2 brings 18-inch alloys, heated power front seats, a power liftgate, fog lights, roof rails, remote start, and standard second-row captain’s chairs. SLT1 adds leather, upgraded front seats, a Bose stereo, and standard blind-spot monitoring, lane-departure warning, rear cross-traffic alert, and rear parking sensors. SLT2 adds 20-inch wheels, a trailering package, heated second-row seats, lane-keep assist, auto high beams, front parking sensors, and low-speed forward-collision warning with auto braking. Denali adds an 8-inch touchscreen with navigation, virtual gauges, heated and ventilated front seats, a heated steering wheel, xenon headlights, polished 20-inch wheels, a hands-free liftgate, and unique grille and badging.
• Powertrain: The 2.5-liter four-cylinder makes 193 hp and 188 lb-ft of torque, but it’s described as inadequate for anything beyond commuter duty. The 3.6-liter V6 makes 310 hp and 271 lb-ft of torque and is the better choice if you want towing, hauling, or stronger everyday performance. Both engines use a 6-speed transmission.
• Safety package: The Driver Alert I package includes blind-spot monitoring, lane-departure warning, rear cross-traffic alert, and rear parking sensors. The Driver Alert II package adds lane-keep assist, auto high beams, front parking sensors, and low-speed forward-collision warning with auto braking. The IIHS Top Safety Pick rating applies only when the Driver Alert II package is equipped, so trim and option content matter.
• Infotainment: The base setup includes a 7-inch touchscreen with Intellilink, Android Auto, Apple CarPlay, and a 4G LTE Wi-Fi hotspot. Higher trims add an upgraded driver’s display, a larger touchscreen, and, on Denali, navigation and virtual gauges.
• Fuel efficiency: The 2.5-liter engine returns 21 mpg city and 26 highway. The V6 returns 17 mpg city, 25 highway, and 20 combined.

Which 2018 GMC Acadia trim should I buy?

The 2018 GMC Acadia is offered in 6 trim levels: SL, SLE, SLE1, SLE2, SLT1, SLT2.

Here's the short version:

• SL: This is the value entry point if you want the lowest starting point and can live with the 2.5-liter engine and front-wheel drive only. It still gives you a 7-inch touchscreen, Android Auto, Apple CarPlay, tri-zone climate control, keyless ignition and entry, and a Wi-Fi hotspot, so it’s not stripped down.
• SLE: This is the trim that opens the door to all-wheel drive and the V6, which makes it the smarter choice if you want the Acadia to feel genuinely capable rather than merely adequate. It’s the key step up for buyers who care about performance and flexibility.
• SLE1: This trim adds LED running lights and satellite radio, making it a modest upgrade if you want a little more content without moving too far up the price ladder.
• SLE2: This is the best-value trim for many shoppers because it adds 18-inch alloys, heated power front seats, a power liftgate, fog lights, roof rails, remote start, and standard second-row captain’s chairs. If you want a more family-friendly setup without jumping into luxury pricing, this is the sweet spot.
• SLT1: This trim is the first one that feels meaningfully upscale, with leather upholstery, power lumbar support, an upgraded driver’s display, a Bose stereo, and standard blind-spot monitoring, lane-departure warning, rear cross-traffic alert, and rear parking sensors. It’s a strong pick if comfort and safety tech matter most.
• SLT2: This is the choice if you want the most advanced safety and convenience content short of Denali, including lane-keep assist, auto high beams, front parking sensors, low-speed forward-collision warning and auto braking, plus heated second-row seats and a trailering package.

The safety package matters here: the IIHS Top Safety Pick rating applies only with the Driver Alert II package, so make sure the trim you choose has that equipment.

Is now a good time to buy a used 2018 GMC Acadia?

This looks like a moderate, selective buyer’s market, so you can shop with some leverage if you’re patient.

• Deal availability: 33.6% of listings are priced as good or great deals.
• Inventory: There are 2,686 listings available.
• Price trend: Prices have softened 11.54% compared with last year.
• Clean inventory: 59.5% of listings are accident-free.

If you find a listing below $15,114, that's toward the low end of the year-round range and worth acting on quickly.

What is the 2018 GMC Acadia's resale value?

The current average of $15,124 sits slightly below last year's $17,097.

That decline suggests the market has already adjusted downward, which can help you as a buyer but may limit upside if you’re thinking about future resale. If you buy at a strong price now, you reduce the risk of taking a bigger hit later.

The Acadia’s appeal still helps support value, especially because shoppers respond well to its roomy cabin, family-friendly layout, and strong owner satisfaction. A well-kept example with the right equipment should remain easier to move than one with visible wear or a weak service history.

Vehicles with strong owner satisfaction ratings, like this model year's 4.8/5, tend to retain buyer demand, which supports resale value over time.

Is the 2018 GMC Acadia safe?

The 2018 GMC Acadia earns a Top Safety Pick rating from IIHS when equipped with the Driver Alert II package, and it earns five-star ratings in frontal collision tests and four-star ratings in all other NHTSA tests.

It earns an 8/10 safety score from our experts.

The Acadia comes with standard 4-wheel antilock disc brakes, traction and stability control, a full suite of airbags, and GM’s Teen Driver technology. The available Driver Alert I package adds blind-spot monitoring, lane-departure warning, rear cross-traffic alert, and rear parking sensors, while Driver Alert II adds lane-keep assist, auto high beams, front parking sensors, and low-speed forward-collision warning with auto braking.

The key caveat is that the strongest safety recognition depends on the right package, so you should not assume every used Acadia has the same protection level. If safety is a priority, verify the exact equipment before you buy.

Should I buy a 2018 GMC Acadia or consider a different year?

If you're weighing the 2018 against nearby model years, here's how to think about it:

Choose the 2018 if:

• 33.6% of listings are priced as good or great deals.
• At 59.5% accident-free, a meaningful share of listings has prior incidents — history verification is especially important.
• Price trend: Prices have softened 11.54% compared with last year.
• Owners rate it 4.8/5 — a strong satisfaction signal.
• The V6 is now available on more trims, improving versatility and everyday usability.

Consider the 2017 if:

• At $12,714, the 2017 costs less than the current year's $15,124 average.
• It’s the redesigned, lighter version that brought the new platform and a fresh start.

Consider the 2019 if:

• At $16,643, the 2019 costs more than the current year's $15,124 average.
• It leans more upscale with a refined cabin and a more distinctive personality.

The bottom line: The 2018 is the better pick if you want the broader V6 availability and a strong mix of value, comfort, and family utility. If your budget is tighter, the 2017 can save you money, while the 2019 is worth considering if you want a more upscale feel and can spend more.

How does the 2018 GMC Acadia compare to the 2018 Chevrolet Traverse?

Our experts score the 2018 GMC Acadia 7.2/10 and the 2018 Chevrolet Traverse 8/10.

The Traverse has the stronger overall expert score, more power, and slightly better highway fuel economy, while the Acadia counters with a more upscale feel and a better city mpg figure. The Acadia also has a slightly higher average used price and a stronger good-and-great deal share, so it can still make sense if you value its character and equipment mix. If you want the more spacious, more powerful choice, the Traverse has the edge; if you want a more refined-feeling midsize SUV, the Acadia is the more distinctive pick.

These recommendations are based on CarGurus' proprietary market data from November 10, 2026, CarGurus experts' opinions, and generative AI.