# Used 2018 Mercedes-Benz GLS 450 prices

> The average asking price for a used 2018 Mercedes-Benz GLS 450 is $18,158, with 97,229 miles on average, across 99 cars for sale at U.S. dealers as of Nov 10, 2026.

Data as of Nov 14, 2026 · [ottoquest.com](https://ottoquest.com/models/mercedes-benz-gls450/2018) · [all Mercedes-Benz GLS 450 model years](https://ottoquest.com/models/mercedes-benz-gls450.md)

- Average asking price: $18,158 (median $17,841)
- Average miles: 97,229
- For sale now: 99
- Average days listed: 63 (of 92 with a listing date)

## 2018 Mercedes-Benz GLS 450 prices by state

States with 5 or more cars for sale.

| State | Average asking | Average miles | For sale | Days listed |
| --- | ---: | ---: | ---: | ---: |
| Florida | $17,130 | 97,661 | 15 | 66 |
| Texas | $17,162 | 99,549 | 13 | 60 |
| Virginia | $17,524 | 89,195 | 9 | 49 |
| Illinois | $19,290 | 97,303 | 9 | 18 |
| California | $18,442 | 89,369 | 8 | 34 |
| Ohio | $15,958 | 129,362 | 5 | 65 |
| Indiana | $18,034 | 100,110 | 5 | 78 |

## Other Mercedes-Benz GLS 450 years

| Year | Average asking | Miles | For sale |
| --- | ---: | ---: | ---: |
| [2027](https://ottoquest.com/models/mercedes-benz-gls450/2027.md) | $100,055 | 197 | 67 |
| [2026](https://ottoquest.com/models/mercedes-benz-gls450/2026.md) | $85,621 | 5,945 | 449 |
| [2025](https://ottoquest.com/models/mercedes-benz-gls450/2025.md) | $68,392 | 18,863 | 353 |
| [2024](https://ottoquest.com/models/mercedes-benz-gls450/2024.md) | $63,061 | 31,789 | 557 |
| [2023](https://ottoquest.com/models/mercedes-benz-gls450/2023.md) | $51,627 | 44,294 | 227 |
| [2022](https://ottoquest.com/models/mercedes-benz-gls450/2022.md) | $42,979 | 54,902 | 252 |
| [2021](https://ottoquest.com/models/mercedes-benz-gls450/2021.md) | $34,361 | 71,116 | 102 |
| [2020](https://ottoquest.com/models/mercedes-benz-gls450/2020.md) | $30,353 | 77,196 | 199 |
| [2019](https://ottoquest.com/models/mercedes-benz-gls450/2019.md) | $21,501 | 87,071 | 158 |
| **2018** | $18,158 | 97,229 | 99 |
| [2017](https://ottoquest.com/models/mercedes-benz-gls450/2017.md) | $16,519 | 106,407 | 186 |

## Recalls · 3

NHTSA, this model year.

- ELECTRICAL SYSTEM:SOFTWARE (May 20, 2022): Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2017-2022 CLA-Class, GLA-Class, GLE-Class, GLS-Class, SLC-Class, A-Class, AMG GT-Class, C-Class, E-Class, S-Class, SL-Class, GLC-Class, CLS-Class, GLB-Class, and G-Class vehicles.  Please refer to MBUSA's recall report for specific vehicle model details.  An error in the communication module's SIM card software can cause a mobile network connection failure, disabling the emergency call (eCall) system.
- ELECTRICAL SYSTEM:SOFTWARE (Feb 5, 2021): Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2016 - 2021 CLA-Class, GLA-Class, GLE-Class, GLS-Class, SLC-Class, A-Class, GT-Class, C-Class, E-Class, S-Class, CLS-Class, SL-Class, B-Class, GLB-Class, GLC-Class, and G-Class vehicles.  Please refer to the Part 573 report for specific vehicle model details.  The software design of the communication module may fail to communicate the correct vehicle location for the emergency call system (eCall) in the event of a crash.
- SERVICE BRAKES, HYDRAULIC (Aug 16, 2018): Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2018 Mercedes-Benz GLE350 4Matic, GLE350, GLS450 4Matic, GLS550 4matic, GLE43 AMG 4Matic, GLE63 AMG 4Matic, GLE63S AMG 4Matic, and GLS63 AMG 4Matic vehicles.  The rear brake caliper pistons on these vehicles may not have been correctly coated, causing gas to become temporarily released into the rear brake hydraulic circuit, reducing braking performance.

## Used 2018 Mercedes-Benz GLS 450 prices: common questions

### What is a fair price for a used 2018 Mercedes-Benz GLS 450?

Used 2018 Mercedes-Benz GLS 450s for sale at U.S. dealers ask $18,158 on average (half ask less than $17,841), across 99 cars. The cars for sale have 97,229 miles on average: one with fewer miles is worth more, and one with more is worth less. To check one car's price against cars of its trim and mileage, enter its VIN in OttoQuest's free Deal Check.

### How long are used 2018 Mercedes-Benz GLS 450s for sale?

The 92 for sale with a listing date have been listed 63 days on average. A car listed much longer than that, or one whose price has already been cut, usually leaves more room to negotiate.

### How does the 2018 Mercedes-Benz GLS 450 compare with the 2017 and 2019?

The 2018 asks $18,158 on average with 97,229 miles; the 2017 asks $16,519 with 106,407 miles, and the 2019 asks $21,501 with 87,071 miles.

### Does the 2018 Mercedes-Benz GLS 450 have recalls?

NHTSA lists 3 safety recall campaigns that cover the 2018 Mercedes-Benz GLS 450. Repairs are free at a dealer of the make; check a car's VIN with NHTSA before you buy to see whether its recalls were fixed.

## More

- Check one car's price: https://ottoquest.com/deal-check.md?vin=<VIN>&price=<price>&mileage=<miles> (markdown; the page is https://ottoquest.com/deal-check)
- Value a car by model, trim, year and mileage: https://ottoquest.com/value
- Free alerts for new listings and price drops: https://ottoquest.com/deals

Used and certified cars for sale at U.S. dealers, each car counted once. Days listed are the dealer's own days on market where they publish it. Price moves compare the same cars at both ends of the window.

---

OttoQuest · [this page](https://ottoquest.com/models/mercedes-benz-gls450/2018). Prices are asking prices of cars for sale in the U.S. and recorded sold prices; a guide to the price, not to a car's condition.