Used 2018 GMC Yukon XL for Sale nearPhiladelphia, PA

Compare 2018 GMC Yukon XL Trims in Philadelphia, PA

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

• Starting at $20,985
• 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 full-size SUV with essential features without paying for luxury upgrades.

• Avg. market price: $22,767 (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 the higher price of luxury trims.

• Avg. market price: $20,985 (updated weekly)
• MPG/MPGe: 15 city / 22 hwy
• Inventory: 13 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 well-rounded SUV with added comfort features without going for the top trim.

• Avg. market price: $22,767 (updated weekly)
• MPG/MPGe: 16 city / 23 hwy
• Inventory: 15 listings — lower availability; may limit negotiating room
• View SLT RWD listings

SLT 4WD — "Who It's For"

The SLT 4WD is the pick for shoppers who want a balance of luxury and capability with all-wheel drive for varied conditions.

• Avg. market price: $22,567 (updated weekly)
• MPG/MPGe: 15 city / 22 hwy
• Inventory: 101 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 premium features and luxury without the need for all-wheel drive.

• Avg. market price: $22,767 (updated weekly)
• MPG/MPGe: 14 city / 23 hwy
• Inventory: 34 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 experience with all-wheel drive capability.

• Avg. market price: $23,494 (updated weekly)
• MPG/MPGe: 14 city / 21 hwy
• Inventory: 243 listings — widest selection in the lineup
• View Denali 4WD listings

Trim Recommendations

Most Popular — Denali 4WD

With 243 active listings, the Denali 4WD is the clear volume leader in the lineup.

Browse Denali 4WD listings

Best Budget Option — SLE 4WD

At $20,985 avg market price — below the lineup median of $22,767 — it's the most accessible entry point.

Browse SLE 4WD listings

Best for Fuel Economy — SLE RWD

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

Browse SLE RWD listings

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

How much does the 2018 GMC Yukon XL cost?

Prices have softened 11.92% compared to this time last year, making it a favorable time to shop this model year.

There are 1,059 listings available, which gives you a solid amount of inventory to compare.

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 roomy it is for vacations and daily use. For you, that makes it a strong fit if you want a large family hauler with genuine utility and an upscale feel. With 32.8% of listings marked as good or great deals, there is meaningful market opportunity if you shop carefully.

Is the 2018 GMC Yukon XL reliable?

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

The owner feedback also points to a dependable, trouble-free ownership experience for many shoppers, with praise centered on how well it serves families over time. For used buyers, the main long-term risk is less about the core appeal and more about finding a well-kept example that avoids wear-related issues.

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

At 60% 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 inspection of body panels, electronics, and interior condition, since owner feedback mentions minor dings and dents as well as a malfunctioning screen. Because this SUV is often chosen for family duty and long trips, you should focus on signs of heavy use and make sure the cabin, cargo area, and major features all match the seller’s description.

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

This looks like a moderate market for selective buyers, with enough inventory and deal activity to reward careful shopping.

• Deal availability: 32.8% of listings are priced as good or great deals.
• Inventory: There are 1,059 listings available.
• Price trend: Prices have softened 11.92% compared with last year.
• Clean inventory: 60.0% of listings are accident-free.

If you find a listing below $21,921, 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 $21,921 sits slightly below last year's $24,886.

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 will 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 spacious, upscale full-size 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:

• 32.8% of listings are priced as good or great deals.
• At 60% accident-free, a meaningful share of listings has prior incidents — history verification is especially important.
• Price trend: Prices have softened 11.92% compared with last year.
• Owners rate it 5/5 — a strong satisfaction signal.

The bottom line: If you want the best balance of price, inventory, and owner satisfaction, the 2018 is a strong primary choice. If you are especially price-sensitive, you may want to compare nearby years and focus on the cleanest, best-maintained example rather than chasing the lowest sticker price alone.

How does the 2018 GMC Yukon XL compare to the 2018 Chevrolet Tahoe?

These recommendations are based on CarGurus' proprietary market data from October 21, 2026, CarGurus experts' opinions, and generative AI.