Used 2018 GMC Yukon XL for SaleNationwide

Compare 2018 GMC Yukon XL Trims

The 2018 GMC Yukon XL offers a range of trims from budget-friendly options to luxury models, catering to various needs and preferences.

• Starting at $15,866
• Best MPG/MPGe: 16 city / 23 hwy
• Most Popular: Denali 4WD

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 RWD — "Who It's For"

The SLE RWD is the pick for shoppers who want a budget-friendly SUV without sacrificing essential features.

• Avg. market price: $15,866 (updated weekly)
• MPG/MPGe: 16 city / 23 hwy
• Inventory: 65 listings — lower availability; may limit negotiating room
• View SLE RWD listings

SLE 4WD — "Who It's For"

The SLE 4WD is the pick for shoppers who want all-wheel drive capability without a hefty price tag.

• Avg. market price: $20,030 (updated weekly)
• MPG/MPGe: 15 city / 22 hwy
• Inventory: 157 listings — lower availability; may limit negotiating room
• View SLE 4WD listings

SLT RWD — "Who It's For"

The SLT RWD is the pick for shoppers who want a blend of luxury and practicality without going for the top-tier trims.

• Avg. market price: $18,688 (updated weekly)
• MPG/MPGe: 16 city / 23 hwy
• Inventory: 421 listings
• View SLT RWD listings

SLT 4WD — "Who It's For"

The SLT 4WD is the pick for shoppers who want sporty performance and all-weather capability in a family-friendly SUV.

• Avg. market price: $21,650 (updated weekly)
• MPG/MPGe: 15 city / 22 hwy
• Inventory: 1,203 listings — widest selection in the lineup
• View SLT 4WD listings

Denali RWD — "Who It's For"

The Denali RWD is the pick for shoppers who want a luxurious SUV experience without the highest price tag.

• Avg. market price: $22,579 (updated weekly)
• MPG/MPGe: 14 city / 23 hwy
• Inventory: 467 listings
• View Denali RWD listings

Denali 4WD — "Who It's For"

The Denali 4WD is the pick for shoppers who want the ultimate luxury SUV with all-wheel drive capability.

• Avg. market price: $24,344 (updated weekly)
• MPG/MPGe: 14 city / 21 hwy
• Inventory: 2,648 listings — widest selection in the lineup
• View Denali 4WD listings

Trim Recommendations

Most Popular — Denali 4WD

With 2,648 active listings, the Denali 4WD is the clear volume leader in the lineup.

Browse Denali 4WD listings

Best Budget Option — SLE RWD

At $15,866 avg market price — below the lineup median of $20,840 — it's the most accessible entry point.

Browse SLE RWD listings

Best for Fuel Economy — SLE RWD

The SLE RWD offers the best fuel economy in the lineup with 16/23 MPG.

Browse SLE RWD listings

These recommendations are based on CarGurus' proprietary market data from September 24, 2026, CarGurus experts' opinions, and generative AI.

How much does the 2018 GMC Yukon XL cost?

Prices have softened 12.14% compared to this time last year, making it a favorable time to shop this model year.

There are 1,040 listings available, which gives you a solid pool to compare prices and equipment.

Is the 2018 GMC Yukon XL a good car?

Yes — the 2018 GMC Yukon XL earns a 5/5 user rating, which points to strong owner satisfaction. Owners consistently praise its spaciousness and luxurious feel, and they also like how well it works for vacations and daily family use. The Yukon XL’s full-size, truck-based layout makes the most sense if you want room above all else, especially for passengers and cargo. With 33.5% of listings marked as good or great deals, you have a decent chance of finding a competitive price.

Is the 2018 GMC Yukon XL reliable?

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

The owner feedback also highlights a dependable, trouble-free ownership experience for many shoppers, with the kind of long-term confidence that matters in a large family SUV. Some owners did mention minor issues like dings, dents, and a malfunctioning screen, so a careful used buyer should still expect to verify condition closely before committing.

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

At 61.4% 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. A pre-purchase inspection should focus on body condition, electronics, and signs of wear that can be easy to miss in photos. Because this is a large, family-oriented SUV, pay close attention to how the cabin, cargo area, and infotainment system have held up.

Is now a good time to buy a used 2018 GMC Yukon XL?

This looks like a moderate, selective buyer’s market, so you can shop patiently and still find worthwhile options.

• Deal availability: 33.5% of listings are priced as good or great deals.
• Inventory: There are 1,040 listings available.
• Price trend: Prices have softened 12.14% compared with last year.
• Clean inventory: 61.4% of listings are accident-free.

If you find a listing below $22,351, that's toward the low end of the year-round range and worth acting on quickly.

What is the 2018 GMC Yukon XL's resale value?

The current average of $22,351 sits slightly below last year's $25,440.

That price movement suggests the market has cooled, which can help you buy more affordably now but may also limit short-term upside if you plan to resell soon. If you keep the vehicle in strong condition and buy at a favorable price, you can reduce the impact of depreciation when it’s time to sell. Demand should remain supported by the Yukon XL’s space-focused appeal and family-friendly utility.

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

Should I buy a 2018 GMC Yukon XL 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:

• 33.5% of listings are priced as good or great deals.
• At 61.4% accident-free, a meaningful share of listings has prior incidents — history verification is especially important.
• Price trend: Prices have softened 12.14% compared with last year.
• Owners rate it 5/5 — a strong satisfaction signal.

The bottom line:

If you want the strongest mix of value and availability, the 2018 is the primary year to target because pricing has eased and there are plenty of listings to compare. If you’re especially price-sensitive, you can also use nearby model years as backup options, but the 2018 gives you a clear starting point for finding a well-equipped full-size SUV without overpaying.

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