Used 2020 Mercedes-Benz G-Class for Sale nearBoston, MA

Compare 2020 Mercedes-Benz G-Class Trims

The G-Class offers a blend of luxury and off-road capability, with the G 550 4MATIC as the entry point and the AMG G 63 4MATIC as the performance leader.

• Starting at $97,997
• Best MPG/MPGe: 13 city / 17 hwy
• Most Popular: AMG G 63 4MATIC

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

G 550 4MATIC — "Who It's For"

The G 550 4MATIC is the pick for shoppers who want luxury features without the high price of the AMG variant. It's a solid choice for those seeking value.

• Avg. market price: $97,997 (updated weekly)
• MPG/MPGe: 13 city / 17 hwy
• Inventory: 626 listings
• View G 550 4MATIC listings

AMG G 63 4MATIC — "Who It's For"

The AMG G 63 4MATIC is the pick for shoppers who want top-tier performance and luxury without compromise. It's the most popular trim for a reason.

• Avg. market price: $134,250 (updated weekly)
• MPG/MPGe: 13 city / 15 hwy
• Inventory: 1,564 listings — widest selection in the lineup
• View AMG G 63 4MATIC listings

Trim Recommendations

Most Popular — AMG G 63 4MATIC

With 1,564 active listings, the AMG G 63 4MATIC is the clear volume leader in the lineup.

Browse AMG G 63 4MATIC listings

Best Budget Option — G 550 4MATIC

At $97,997 avg market price — below the lineup median of $116,123 — it's the most accessible entry point.

Browse G 550 4MATIC listings

Closing Attribution

These recommendations are based on CarGurus' proprietary market data from September 17, 2026, CarGurus experts' opinions, and generative AI.

How much does the 2020 Mercedes-Benz G-Class cost?

Prices have softened 3.32% compared to this time last year, making it a favorable time to shop this model year.

There are 656 listings available, which gives you a meaningful amount of inventory to compare.

Is the 2020 Mercedes-Benz G-Class a good car?

The 2020 Mercedes-Benz G-Class earns a 7.17/10 expert rating.

The standout strength is Look and feel at 9/10.

You get a vehicle that blends premium interior materials, true off-road capability, and surprisingly good handling for something this rugged. The tradeoff is that it is poor value for money, and it can feel a little too rugged for the money.

Good fit if: you want a luxury SUV with a distinctive personality and serious capability, not a conventional all-rounder.

Market signal: 33.1% of listings are priced as good or great deals.

Is the 2020 Mercedes-Benz G-Class reliable?

The 2020 Mercedes-Benz G-Class is presented as a rugged, body-on-frame SUV with a modernized redesign and a long list of standard safety and driver-assistance features.

Its off-road hardware and heavy-duty construction suggest it is built for demanding use, while the cabin materials and luxury features point to a premium ownership experience. The performance notes also describe it as stable on highways and backroads, with precise steering and an adaptive suspension that helps control body roll.

Mercedes includes a broad safety suite, and the driver-assistance features generally performed well, though lane-keep assist had a few false alarms. The Pre Safe system adds another layer of protection by tightening seatbelts, closing windows, and adjusting the front-passenger seat if a crash seems imminent.

For used buyers, the main long-term risk is that a complex, expensive SUV like this can be costly to own if maintenance or repairs stack up.

What should I look for when buying a used 2020 Mercedes-Benz G-Class?

Accident-free inventory is solid at 78.8% — always verify the vehicle history report.

You should still check the history report carefully and prioritize a pre-purchase inspection, especially on a vehicle with this price point and complexity. Focus on overall condition, signs of hard use, and whether the truck has been maintained consistently.

Key things to evaluate:

• Trim level: The base G550 brings standard leather upholstery, heated front and rear seats, three-zone automatic climate control, and 64-color ambient lighting, while the AMG Line package adds flared wheel arches and a front push bar.
• Powertrain: The G550 uses a 4.0-liter twin-turbocharged V8 with 416 horsepower and 450 pound-feet of torque, while the AMG G63 uses a more powerful twin-turbo V8 with 577 hp and 627 lb-ft of torque. Four-wheel drive and a nine-speed automatic transmission are standard.
• Safety package: Standard equipment includes adaptive cruise control with stop-and-go, automatic emergency braking, lane-keep assist, blind-spot monitoring, parking assist, and a driver-attention monitor. Pre Safe adds seatbelt tightening, window closing, and front-passenger seat adjustment, and Pre Safe Sound is also included.
• Infotainment: The standard setup includes a 12.3-inch infotainment display, Apple CarPlay, Android Auto, Bluetooth, and SiriusXM satellite radio with a six-month trial. A second 12.3-inch digital instrument screen is available, and the system uses a Comand controller rather than a touchscreen.
• Fuel efficiency: The EPA rates the G550 at 13 mpg city, 17 highway, and 14 combined.

Which 2020 Mercedes-Benz G-Class trim should I buy?

The 2020 Mercedes-Benz G-Class is offered in 2 trim levels: G550, AMG G63.

Here's the short version:

• G550: This is the better-value choice if you want the core G-Class experience without paying extra for the AMG model’s added performance. It still gives you the standard luxury cabin, serious off-road hardware, and the full suite of driver-assistance features.
• AMG G63: Choose this if you want the most powerful version and are willing to pay for it. It adds a much stronger twin-turbo V8 and is the right pick if performance matters more than value.

The safety package is standard across the lineup, so you do not need to move up a trim to get the core driver-assistance features.

Is now a good time to buy a used 2020 Mercedes-Benz G-Class?

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

• Deal availability: 33.1% of listings are priced as good or great deals.
• Inventory: There are 656 listings available.
• Price trend: Prices have softened 3.32% compared with last year.
• Clean inventory: 78.8% of listings are accident-free.

If you find a listing below $121,505, that's toward the low end of the year-round range and worth acting on quickly.

What is the 2020 Mercedes-Benz G-Class's resale value?

The current average of $122,209 sits slightly below last year's $126,402.

That price movement suggests the market has eased a bit, which can help you buy more selectively now. If you plan to sell later, the G-Class still sits in a high-dollar segment, but the recent decline means you should not assume it will hold value perfectly in the short term.

For a future seller, the key is to buy well and keep the vehicle in strong condition. A clean history and well-documented maintenance will matter more when you eventually go to market.

Is the 2020 Mercedes-Benz G-Class safe?

The 2020 G-Class hasn’t received crash-test ratings from the Insurance Institute for Highway Safety (IIHS) or National Highway Traffic Safety Administration (NHTSA).

It earns a 7/10 safety score from our experts.

Mercedes equips it with adaptive cruise control with stop-and-go, automatic emergency braking, lane-keep assist, blind-spot monitoring, parking assist, and a driver-attention monitor. Pre Safe adds seatbelt tightening, window closing, and front-passenger seat adjustment, while Pre Safe Sound is designed to help limit hearing damage.

One caveat is that lane-keep assist had a few false alarms and could intervene too aggressively.

Should I buy a 2020 Mercedes-Benz G-Class 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:

• 33.1% of listings are priced as good or great deals.
• Accident-free inventory is solid at 78.8% — always verify the vehicle history report.
• Prices have softened 3.32% compared with last year.
• It combines ruggedness and luxury while keeping the old-school G-Class character.

Consider the 2019 if:

• At $105,185, the 2019 costs less than the current year's $122,209 average.
• It delivers the redesigned G-Class formula at a lower price.

Consider the 2021 if:

• At $137,396, the 2021 costs more than the current year's $122,209 average.
• It adds a more sophisticated powertrain, mechanicals, and technology.

The bottom line: The 2020 is the right middle ground if you want the classic G-Class personality with a softer market price than the 2021. If your priority is saving money, the 2019 is the smarter value play; if you want the newer-feeling setup and can spend more, the 2021 is the upgrade path.

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