Used 2020 GMC Terrain for Sale nearBillings, MT

Compare 2020 GMC Terrain Trims

The 2020 GMC Terrain offers a range of trims from budget-friendly options to more luxurious models, catering to various needs and preferences.

• Starting at $16,246
• Best MPG/MPGe: 26 city / 30 hwy
• Most Popular: SLT AWD

Trim Overview

Prices updated weekly from CarGurus listings.

Quick Compare Table

Listing prices sourced from CarGurus — updated weekly. OEM specs from manufacturer data.

Missing data displayed as "—".

Trim Deep Dives

SLE FWD — "Who It's For"

The SLE FWD is the pick for shoppers who want essential features without paying for extras. It's the most budget-friendly option in the lineup.

• Avg. market price: $16,246 (updated weekly)
• MPG/MPGe: 26 city / 30 hwy
• Inventory: 1,558 listings — widest selection in the lineup
• View SLE FWD listings

SLE AWD — "Who It's For"

The SLE AWD is the pick for shoppers who want all-wheel drive without a hefty price tag. It balances affordability with capability.

• Avg. market price: $17,252 (updated weekly)
• MPG/MPGe: 25 city / 28 hwy
• Inventory: 1,899 listings — widest selection in the lineup
• View SLE AWD listings

SLT FWD — "Who It's For"

The SLT FWD is the pick for shoppers who want a blend of comfort and technology without going for the top trim. It offers a solid mix of features.

• Avg. market price: $16,693 (updated weekly)
• MPG/MPGe: 26 city / 30 hwy
• Inventory: 831 listings
• View SLT FWD listings

SLT AWD — "Who It's For"

The SLT AWD is the pick for shoppers who want sporty features and all-wheel drive. It's the most popular trim, offering a great balance of style and performance.

• Avg. market price: $17,493 (updated weekly)
• MPG/MPGe: 25 city / 28 hwy
• Inventory: 2,020 listings — widest selection in the lineup
• View SLT AWD listings

Denali FWD — "Who It's For"

The Denali FWD is the pick for shoppers who want luxury features without the all-wheel drive. It offers premium amenities for a comfortable ride.

• Avg. market price: $20,961 (updated weekly)
• MPG/MPGe: 22 city / 28 hwy
• Inventory: 53 listings — lower availability; may limit negotiating room
• View Denali FWD listings

Denali AWD — "Who It's For"

The Denali AWD is the pick for shoppers who want top-tier luxury and all-weather capability. It's the most feature-rich option in the lineup.

• Avg. market price: $21,532 (updated weekly)
• MPG/MPGe: 21 city / 26 hwy
• Inventory: 1,149 listings — widest selection in the lineup
• View Denali AWD listings

Trim Recommendations

Most Popular — SLT AWD

With 2,020 active listings, the SLT AWD is the clear volume leader in the lineup.

Browse SLT AWD listings

Best Budget Option — SLE FWD

At $16,246 avg market price — below the lineup median of $17,372 — it's the most accessible entry point.

Browse SLE FWD listings

Best for Fuel Economy — SLE FWD

The SLE FWD offers the best fuel economy in the lineup with 26/30 MPG/MPGe.

Browse SLE FWD listings

These recommendations are based on CarGurus' proprietary market data from September 12, 2026, CarGurus experts' opinions, and generative AI.

How much does the 2020 GMC Terrain cost?

Prices have softened 9.56% compared to this time last year, making it a favorable time to shop this model year.

There are 2,233 listings available, which gives you a solid amount of inventory to compare.

Is the 2020 GMC Terrain a good car?

Generally — the 4.43/5 user rating points to strong owner satisfaction. Owners repeatedly praise the Terrain’s comfort, safety features, spacious interior, and economical performance, and many also like the upscale feel and intuitive entertainment system. For you, that makes it a sensible pick if you want a compact SUV that leans more premium than basic while still covering everyday family and commuting needs. The market also shows 33.5% of listings as good or great deals, which adds some shopping flexibility.

Is the 2020 GMC Terrain reliable?

Owners rate it 4.43/5, a solid signal of long-term satisfaction.

The owner feedback also emphasizes dependable comfort, safety, and economical day-to-day use, which are the kinds of traits that usually matter most over time. That said, you should still expect the usual used-car ownership risk, so a careful inspection and clean service history matter before you commit.

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

At 67.5% accident-free, a meaningful share of listings has prior incidents — history verification is especially important.

You should start with a vehicle history report and confirm whether any prior damage was repaired properly. Put inspection priority on body panels, paint match, alignment, and signs of uneven wear, since those can reveal past collision work. It also makes sense to focus on overall condition and maintenance records, because the best-used examples will stand out quickly once you compare them side by side.

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

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

• Deal availability: 33.5% of listings are priced as good or great deals.
• Inventory: There are 2,233 listings available.
• Price trend: Prices have softened 9.56% compared with last year.
• Clean inventory: 67.5% of listings are accident-free.

If you find a listing below $17,623, that's toward the low end of the year-round range and worth acting on quickly.

What is the 2020 GMC Terrain's resale value?

The current average of $17,623 sits slightly below last year's $19,485.

That price movement suggests the Terrain has softened in the near term, which can help you buy at a more favorable entry point today. For a future seller, that also means resale performance will depend heavily on how well you preserve condition, mileage, and maintenance history. If you buy a clean example now and keep it well documented, you give yourself a better chance of standing out later in a market that still values well-kept compact SUVs.

Vehicles with solid owner satisfaction ratings, like this model year's 4.43/5, tend to retain buyer demand, which supports resale value over time.

Should I buy a 2020 GMC Terrain 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:

• 33.5% of listings are priced as good or great deals.
• At 67.5% accident-free, a meaningful share of listings has prior incidents — history verification is especially important.
• Price trend: Prices have softened 9.56% compared with last year.
• Owners rate it 4.43/5 — a solid satisfaction signal.

The bottom line: If you want the strongest balance of value, owner satisfaction, and current market softness, the 2020 is the primary year to target. If your priority is simply stretching your budget as far as possible, a nearby older year may be worth a look, but you’ll want to weigh that against the 2020’s stronger feature set and broader appeal.

These recommendations are based on CarGurus' proprietary market data from September 15, 2026, CarGurus experts' opinions, and generative AI.