Is Mercedes-Benz GLS E20 compliant?
Petrol variants manufactured from 2024 onwards can safely use E20 fuel. Older petrol variants are not certified for E20.
E20 compatible from: 2024 onwards
Expected mileage impact: 4–6% reduction(ARAI controlled tests (2026))
Mercedes-Benz warranty: 3 years / unlimited km. E20 use covered for 2024+ variants. Older variants may not be covered for E20-related damage.
Mercedes-Benz India officially confirmed all BS VI petrol vehicles are materially compatible with E20 fuel and certified by relevant authorities. Source: Mercedes-Benz India Customer Advisory (July 2026)
Year-wise E20 compliance status
450 4MATIC Night Edition
petrol · automatic
450d 4MATIC Night Edition
diesel · automatic
450 4MATIC AMG Line
petrol · automatic
450d 4MATIC AMG Line
diesel · automatic
450 4MATIC
petrol · automatic
450d 4MATIC
diesel · automatic
400d 4MATIC
diesel · automatic
400d 4MATIC
diesel · automatic
450 4MATIC
petrol · automatic
Grand Edition Diesel
diesel · automatic
Grand Edition Petrol
petrol · automatic
63 AMG
petrol · automatic
350 d
diesel · automatic
400 4MATIC
petrol · automatic
| Year | Variant | Fuel | Transmission | E20 Status |
|---|---|---|---|---|
| 2026 | 450 4MATIC Night Edition | petrol | automatic | ✓E20 Compatible |
| 450d 4MATIC Night Edition | diesel | automatic | -Not Applicable (Diesel/CNG/EV) | |
| 2025 | 450 4MATIC AMG Line | petrol | automatic | ✓E20 Compatible |
| 450d 4MATIC AMG Line | diesel | automatic | -Not Applicable (Diesel/CNG/EV) | |
| 2024 | 450 4MATIC | petrol | automatic | ✓E20 Compatible |
| 450d 4MATIC | diesel | automatic | -Not Applicable (Diesel/CNG/EV) | |
| 2023 | 400d 4MATIC | diesel | automatic | -Not Applicable (Diesel/CNG/EV) |
| 2020 | 400d 4MATIC | diesel | automatic | -Not Applicable (Diesel/CNG/EV) |
| 450 4MATIC | petrol | automatic | ⚠Partially E20 Compatible | |
| 2018 | Grand Edition Diesel | diesel | automatic | -Not Applicable (Diesel/CNG/EV) |
| Grand Edition Petrol | petrol | automatic | ✗Not E20 Compatible | |
| 2017 | 63 AMG | petrol | automatic | ✗Not E20 Compatible |
| 2016 | 350 d | diesel | automatic | -Not Applicable (Diesel/CNG/EV) |
| 400 4MATIC | petrol | automatic | ✗Not E20 Compatible |
What to do if your GLS is not E20 compliant
Regular Servicing: Get your fuel system inspected at regular intervals. Ask your mechanic to check fuel lines, seals, gaskets, and O-rings for signs of wear.
Fuel Filter Replacement: Replace your fuel filter more frequently, every 15,000-20,000 km instead of 30,000 km.
Monitor Mileage: Track your fuel efficiency. If you notice a drop beyond 10%, consult your service centre.
Consider Retrofit: Some service centres offer ethanol-compatible fuel system component upgrades. Costs vary from Rs 2,000-8,000 depending on the vehicle.
Premium Fuel Option: Indian Oil XP100 (100-octane, ethanol-free) is available at select pumps at Rs 150+/litre for those who want to avoid E20 entirely.
Other Mercedes-Benz models
Calculate your E20 mileage impact.
Find out exactly how much E20 fuel will cost you per month with our free calculator.
Open Mileage CalculatorMercedes-Benz GLS E20 FAQ
Is Mercedes-Benz GLS E20 compatible?
The Mercedes-Benz GLS is partially E20 compatible. Models manufactured from 2024 onwards are E20 ready, while older models were designed for E10 fuel only.
What happens if I use E20 petrol in my Mercedes-Benz GLS?
Using E20 in a non-compatible GLS may cause 5-12% mileage drop, faster wear of rubber fuel system components (hoses, seals, gaskets), and potential cold-start issues. Consider getting fuel system components inspected.
How much mileage will I lose with E20 in Mercedes-Benz GLS?
Non-E20 compatible GLS models may see a 5-12% mileage drop. If you currently get 20 km/l, expect around 17.6-19 km/l on E20.