2022 Mercedes-Benz GLC300 — Full Specifications
As an Amazon Associate and CJ Affiliate and AWIN publisher we earn from qualifying purchases. Links below are affiliate links.
Running gear matters most — before anything else, UK: check tyre prices at TirendoUS: check wheel & tyre prices at WheelHero for this car's fitment.
The 2022 Mercedes-Benz GLC300 is an SUV powered by a 2L 4-cyl turbo premium gasoline engine. It returns around 29 mpg (UK) / 24 mpg (US EPA) combined. Owners often keep a Mercedes-Benz GLC300 workshop manual to hand for servicing and repairs.
Compared with the 2021 Mercedes-Benz GLC300: Fuel economy is essentially unchanged at around 29 mpg (UK) combined. The engine line-up listed by EPA is unchanged. It carries the same 5★ overall NHTSA rating.
Full Specifications
| Engine | 2L 4-cyl turbo |
|---|---|
| Transmission | Automatic 9-spd |
| Fuel Type | Premium Gasoline |
| Powertrain | Conventional |
| Drive | All-Wheel Drive |
| Body Style | SUV |
| Fuel Economy (UK) | 29 combined / 25 urban / 34 extra-urban mpg |
| Fuel Economy (US EPA) | 24 combined / 21 city / 28 highway mpg |
| CO₂ Emissions | 232 g/km |
| EPA Greenhouse Gas Score | 5 / 10 (10 = lowest emissions) |
| EPA Est. Annual Fuel Cost | $3,400 (15,000 mi/yr, US prices) |
Engine & Transmission Options
EPA lists 2 configurations for the 2022 Mercedes-Benz GLC300, all with the 2L 4-cyl turbo engine. 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 |
|---|---|---|---|---|---|---|
| 2L 4-cyl turbo | Automatic 9-spd | All-Wheel Drive | 29 | 24 (21/28) | 232 | $3,400 |
| 2L 4-cyl turbo | Automatic 9-spd | Rear-Wheel Drive | 29 | 24 (22/27) | 232 | $3,400 |
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 2022 Mercedes-Benz GLC300
Running Costs: 2022 Mercedes-Benz GLC300
Covering around 8,000 miles a year in a 2022 Mercedes-Benz GLC300 at 29 mpg combined, expect roughly 1,254 litres of fuel annually — multiply by your local price per litre for a cost estimate. For US owners, the EPA estimates about $3,400 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.
2022 Mercedes-Benz GLC300 Safety Ratings (NHTSA)
Recalls & Owner Complaints (NHTSA)
NHTSA lists no safety recall campaigns for the 2022 Mercedes-Benz GLC300 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 63 complaints with NHTSA about the 2022 Mercedes-Benz GLC300. The most-reported areas are Steering (14), Fuel/propulsion system (13), Electrical system (12). Complaints include 5 reported crashes, 2 reported fires, 3 reported injuries. That is close to the median of 66 complaints across the 11 Mercedes-Benz GLC300 model years in our data.
Used-buyer checklist for the 2022 Mercedes-Benz GLC300
Based on where NHTSA recalls and owner complaints cluster for this model year, these are the areas worth checking before you buy:
- Steering (14 owner complaints) — Check for play, noise or heavy steering, and ask whether any steering recall work was done.
- Fuel system (13 owner complaints) — Ask whether any fuel-pump or fuel-system recalls were completed, and watch for hard starting or stalling.
- Electrical system (12 owner complaints) — Test every switch, window, light and warning lamp on a test drive, and ask about battery or alternator replacements.
- Engine (10 owner complaints) — Listen for unusual noise on a cold start, check for warning lights and ask for the service records.
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 GLC300 compare to similar SUVs? For context, SUVs in our database average around 27 mpg (UK) combined — this model's 29 mpg figure is 2 mpg better than that average. Its 232 g/km CO₂ figure is 21 g/km lower 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 2022 Mercedes-Benz GLC300's 29 mpg is 3 mpg above that make average. Its 232 g/km CO₂ figure is 36 g/km lower than the 268 g/km Mercedes-Benz average.
Of the 11 Mercedes-Benz GLC300 model years we cover, the 2022 ranks 6th for combined fuel economy on its best configuration (29 mpg UK combined, against a high of 35 mpg). See every Mercedes-Benz GLC300 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 2022 Mercedes-Benz GLC300
Frequently Asked Questions
What engine does the 2022 Mercedes-Benz GLC300 have?
It's fitted with a 2L 4-cyl turbo premium gasoline engine, paired with a automatic 9-spd transmission.
What is the fuel economy of the 2022 Mercedes-Benz GLC300?
The most efficient configuration returns around 29 mpg (UK) combined, or 24 mpg on the US EPA cycle.
How much does the 2022 Mercedes-Benz GLC300 cost to fuel per year?
The US EPA estimates about $3,400 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 2022 Mercedes-Benz GLC300 have a good safety rating?
It holds an overall NHTSA rating of 5 stars, with 5 stars for frontal crash protection.
Does the 2022 Mercedes-Benz GLC300 have any recalls?
NHTSA lists no safety recall campaigns for the 2022 Mercedes-Benz GLC300 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 2022 Mercedes-Benz GLC300?
Among the 63 owner complaints filed with NHTSA, the most-reported areas are Steering (14 complaints), Fuel/propulsion system (13 complaints), Electrical system (12 complaints). Complaints are unverified owner reports, not confirmed defects, and raw counts rise with how many cars were sold.
Is the Mercedes-Benz GLC300's fuel economy good for an SUV?
Yes — it returns around 29 mpg (UK) combined, against a same-body-style average of roughly 27 mpg among the SUVs we track.