2018 Mercedes-Benz GLE350 — Full Specifications
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The 2018 Mercedes-Benz GLE350 is an SUV powered by a 3.5L 6-cyl premium gasoline engine. Its most fuel-efficient configuration returns around 24 mpg (UK) / 20 mpg (US EPA) combined, with 23–24 mpg (UK) across all configurations. Owners often keep a Mercedes-Benz GLE350 workshop manual to hand for servicing and repairs.
Compared with the 2017 Mercedes-Benz GLE350: Fuel economy is essentially unchanged at around 24 mpg (UK) combined. The engine line-up listed by EPA is unchanged.
Full Specifications
| Engine | 3.5L 6-cyl |
|---|---|
| Transmission | Automatic 7-spd |
| Fuel Type | Premium Gasoline |
| Powertrain | Conventional |
| Drive | Rear-Wheel Drive |
| Body Style | SUV |
| Fuel Economy (UK) | 24 combined / 22 urban / 28 extra-urban mpg |
| Fuel Economy (US EPA) | 20 combined / 18 city / 23 highway mpg |
| CO₂ Emissions | 273 g/km |
| EPA Greenhouse Gas Score | 3 / 10 (10 = lowest emissions) |
| EPA Est. Annual Fuel Cost | $4,100 (15,000 mi/yr, US prices) |
Engine & Transmission Options
EPA lists 3 configurations for the 2018 Mercedes-Benz GLE350, all with the 3.5L 6-cyl engine. Combined fuel economy ranges from 19 to 20 mpg (US), or 23 to 24 mpg (UK), depending on engine, transmission and drive. The headline figures at the top of this page describe the most fuel-efficient configuration.
| Engine | Transmission | Drive | MPG (UK) | MPG (US) | CO₂ g/km | Fuel cost / yr |
|---|---|---|---|---|---|---|
| 3.5L 6-cyl | Automatic 7-spd | 4-Wheel Drive | 23 | 19 (18/22) | 284 | $4,350 |
| 3.5L 6-cyl | Automatic 7-spd | 4-Wheel Drive | 23 | 19 (18/22) | 284 | $4,350 |
| 3.5L 6-cyl | Automatic 7-spd | Rear-Wheel Drive | 24 | 20 (18/23) | 273 | $4,100 |
MPG (US) shows combined, with city/highway in brackets. Highlighted row = the configuration used for the headline figures. Source: US EPA fueleconomy.gov.
Owner Essentials for the 2018 Mercedes-Benz GLE350
Running Costs: 2018 Mercedes-Benz GLE350
Covering around 8,000 miles a year in a 2018 Mercedes-Benz GLE350 at 24 mpg combined, expect roughly 1,515 litres of fuel annually — multiply by your local price per litre for a cost estimate. For US owners, the EPA estimates about $4,100 a year in fuel for the most efficient configuration (15,000 miles, national average prices). Work out exact fuel costs with the fuel cost calculator on 247Calculators.
Convert between MPG and L/100km with the unit converters on 247QuickTools. Not sure what tyre size fits? 247TyreCheck explains tyre sizing.
Planning a road trip? Grab a road trip packing list. Only need this car occasionally? See our buy vs rent comparison.
2018 Mercedes-Benz GLE350 Safety Ratings (NHTSA)
No NHTSA crash-test rating is on record for this model year. The NHTSA rates only a subset of vehicles each year; you can browse every rated vehicle on our NHTSA Safety Ratings hub.
Recalls & Owner Complaints (NHTSA)
NHTSA lists no safety recall campaigns for the 2018 Mercedes-Benz GLE350 as of 6 October 2026. Recalls can be issued years after a model is sold, so it is still worth checking your own VIN.
Owners have filed 56 complaints with NHTSA about the 2018 Mercedes-Benz GLE350. The most-reported areas are Power train (10), Electrical system (9), Unspecified (7). Complaints include 8 reported crashes, 1 reported fire, 6 reported injuries, 1 reported death. That is close to the median of 63 complaints across the 10 Mercedes-Benz GLE350 model years in our data.
Used-buyer checklist for the 2018 Mercedes-Benz GLE350
Based on where NHTSA recalls and owner complaints cluster for this model year, these are the areas worth checking before you buy:
- Transmission & drivetrain (10 owner complaints) — On the test drive, watch for hesitation, jerking or slipping between gears and ask for transmission service history.
- Electrical system (9 owner complaints) — Test every switch, window, light and warning lamp on a test drive, and ask about battery or alternator replacements.
- Brakes (7 owner complaints) — Brake firmly from speed and look for pulling, vibration or a soft pedal; ask for brake service history.
Source: US NHTSA recall and consumer-complaint databases, retrieved 6 October 2026. Complaints are unverified owner reports, not confirmed defects. Check any vehicle by VIN at nhtsa.gov/recalls, and see our guide to checking a used car for recalls.
How It Compares
How does the Mercedes-Benz GLE350 compare to similar SUVs? For context, SUVs in our database average around 27 mpg (UK) combined — this model's 24 mpg figure is 3 mpg below that average. Its 273 g/km CO₂ figure is 20 g/km higher than the 253 g/km average for SUVs on this site. This comparison is based on 1824 SUVs in our dataset.
Mercedes-Benz models in our database average about 26 mpg (UK) combined on their most efficient configuration; the 2018 Mercedes-Benz GLE350's 24 mpg is 2 mpg below that make average.
Of the 10 Mercedes-Benz GLE350 model years we cover, the 2018 ranks 8th for combined fuel economy on its best configuration (24 mpg UK combined, against a high of 29 mpg). See every Mercedes-Benz GLE350 year side by side.
Last updated: · Data: US EPA (fueleconomy.gov) and NHTSA safety ratings 18 July 2026; NHTSA recalls and complaints 6 October 2026; Wikidata & curated EU catalogue 18 July 2026; European generation and engine data from Wikipedia 7 October 2026
Vehicle data sourced from manufacturer specifications. Always verify with your vehicle handbook or a qualified mechanic. This is a reference tool, not professional advice.
Recommended Accessories for the 2018 Mercedes-Benz GLE350
Frequently Asked Questions
What engine does the 2018 Mercedes-Benz GLE350 have?
It's fitted with a 3.5L 6-cyl premium gasoline engine, paired with a automatic 7-spd transmission.
What is the fuel economy of the 2018 Mercedes-Benz GLE350?
The most efficient configuration returns around 24 mpg (UK) combined, or 20 mpg on the US EPA cycle. Across all configurations the UK combined figure runs from 23 to 24 mpg.
How much does the 2018 Mercedes-Benz GLE350 cost to fuel per year?
The US EPA estimates about $4,100 a year in fuel for the most efficient configuration, based on 15,000 miles of mixed driving and national average fuel prices. Your own cost will depend on mileage and local prices.
Does the 2018 Mercedes-Benz GLE350 have any recalls?
NHTSA lists no safety recall campaigns for the 2018 Mercedes-Benz GLE350 as of 6 October 2026. Recalls can be issued years after a model is sold, so it is still worth checking your own VIN.
What are the most common problems reported for the 2018 Mercedes-Benz GLE350?
Among the 56 owner complaints filed with NHTSA, the most-reported areas are Power train (10 complaints), Electrical system (9 complaints), Unspecified (7 complaints). Complaints are unverified owner reports, not confirmed defects, and raw counts rise with how many cars were sold.
Is the Mercedes-Benz GLE350's fuel economy good for an SUV?
It returns around 24 mpg (UK) combined, against a same-body-style average of roughly 27 mpg among the SUVs we track.