Used 2018 GMC Yukon XL for Sale nearPhoenix, AZ

Compare 2018 GMC Yukon XL Trims in Phoenix, AZ

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 $18,300
• 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 well-equipped SUV without the higher price of luxury trims.

• Avg. market price: $20,133 (updated weekly)
• MPG/MPGe: 16 city / 23 hwy
• Inventory: 6 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 paying for premium features.

• Avg. market price: $20,133 (updated weekly)
• MPG/MPGe: 15 city / 22 hwy
• Inventory: 12 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 balance of luxury and value without going for the top-tier trims.

• Avg. market price: $20,133 (updated weekly)
• MPG/MPGe: 16 city / 23 hwy
• Inventory: 27 listings
• View SLT RWD listings

SLT 4WD — "Who It's For"

The SLT 4WD is the pick for shoppers who want premium features and all-wheel drive without the highest price tag.

• Avg. market price: $18,300 (updated weekly)
• MPG/MPGe: 15 city / 22 hwy
• Inventory: 58 listings
• View SLT 4WD listings

Denali RWD — "Who It's For"

The Denali RWD is the pick for shoppers who want luxury features without the highest price in the lineup.

• Avg. market price: $20,133 (updated weekly)
• MPG/MPGe: 14 city / 23 hwy
• Inventory: 30 listings
• View Denali RWD listings

Denali 4WD — "Who It's For"

The Denali 4WD is the pick for shoppers who want the most luxurious features and all-wheel drive capability.

• Avg. market price: $21,965 (updated weekly)
• MPG/MPGe: 14 city / 21 hwy
• Inventory: 168 listings — widest selection in the lineup
• View Denali 4WD listings

Trim Recommendations

Most Popular — Denali 4WD

With 168 active listings, the Denali 4WD is the clear volume leader in the lineup.

Browse Denali 4WD listings

Best Budget Option — SLT 4WD

At $18,300 avg market price — below the lineup median of $20,133 — it's the most accessible entry point.

Browse SLT 4WD 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 12, 2026, CarGurus experts' opinions, and generative AI.

How much does the 2018 GMC Yukon XL cost?

Prices have softened 12.60% compared to this time last year, making it a favorable time to shop this model year.

There are 1,012 listings available, which suggests you have a solid amount of inventory to compare.

Is the 2018 GMC Yukon XL a good car?

Yes — the 5/5 user rating points to very strong owner satisfaction. Owners consistently praise its spaciousness, its luxurious feel, and how well it works for family travel and daily use. The overview also shows why it fits buyers who need room above all else: it is a full-size SUV with a spacious third row, a large cargo area, and available nine-passenger seating. With 33.2% of listings marked as good or great deals, you have a meaningful number of attractive options to shop.

Is the 2018 GMC Yukon XL reliable?

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

The owner feedback points to a vehicle that many drivers feel good about living with over time, especially for family use and road trips. The same feedback also mentions a few minor issues such as dings, dents, and a malfunctioning screen, so used buyers should pay attention to condition and electronics. For long-term ownership, the main risk is less about broad dissatisfaction and more about finding a well-kept example that has been maintained carefully.

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

At 60.6% accident-free, a meaningful share of listings has prior incidents — history verification is especially important.

You should start with a vehicle history report so you can separate clean examples from those with prior damage. After that, prioritize a thorough pre-purchase inspection, especially for body condition, panel alignment, and any signs of repair work. It is also smart to test the infotainment screen and other convenience features carefully, since owner feedback mentions screen-related issues.

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 be choosy if you shop carefully.

• Deal availability: 33.2% of listings are priced as good or great deals.
• Inventory: There are 1,012 listings available.
• Price trend: Prices have softened 12.60% compared with last year.
• Clean inventory: 60.6% of listings are accident-free.

If you find a listing below $22,599, 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 $22,599 sits slightly below last year's $25,856.

That price movement suggests the market has already adjusted downward, which can help you buy at a more favorable entry point today. For a future seller, it also means resale value may depend heavily on condition, mileage, and how well the vehicle has been maintained. Because this model has strong owner satisfaction, demand should remain supported among shoppers who want a large, family-focused SUV.

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:

• 33.2% of listings are priced as good or great deals.
• At 60.6% accident-free, a meaningful share of listings has prior incidents — history verification is especially important.
• Price trend: Prices have softened 12.60% compared with last year.
• Owners rate it 5/5 — a strong satisfaction signal.

The bottom line: You should lean toward the 2018 if you want a spacious, family-friendly full-size SUV and you can verify condition carefully. If you are especially price-sensitive, a nearby model year may be worth comparing, but the 2018 stands out as a strong value when you find a clean, well-priced example.

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