2026 head-to-head · Subcompact Car
2026 Audi A3 vs Mercedes-Benz AMG GT Hybrid
MPG, range and what each one really costs you to fuel, from official EPA ratings and recalculated with your own gas and electricity prices.
AWD · 2.0L 4-cyl turbo · 7-speed dual-clutch · 28 MPG
The 2026 Audi A3 is the cheaper one to run. Driving 15,000 miles a year with $3.95/gal premium gas, it costs about $2,116 a year to fuel (28 MPG), versus $2,693 for the 2026 Mercedes-Benz AMG GT Hybrid (22 MPG). That's roughly $577 a year, or about $2,886 over five years.
Your numbers
Change these to match your driving and local prices. Every figure and chart on this page updates.
Fuel cost over 10 years
- Audi A3
- Mercedes-Benz AMG GT Hybrid
Side by side
| Audi A3 | Mercedes-Benz AMG GT Hybrid | |
|---|---|---|
| $2,116 | Your annual fuel cost | $2,693 |
| 28 MPG | Combined efficiency | 22 MPG |
| 24 MPG | City | 19 MPG |
| 34 MPG | Highway | 27 MPG |
| 87 cu ft | Passenger volume | 81 cu ft |
| 8 cu ft | Cargo volume | 16 cu ft |
| 323 g/mi | Tailpipe CO₂ (g/mi) | 405 g/mi |
| 5/10 | EPA fuel economy score | 4/10 |
| 5/10 | EPA greenhouse gas score | 4/10 |
| Gas | Powertrain | Hybrid |
| Premium gasoline | Fuel | Premium gasoline |
| 2.0L 4-cyl turbo | Engine / motor | 2.0L 4-cyl turbo |
| 7-speed dual-clutch | Transmission | 9-speed automatic |
| AWD | Drivetrain | RWD |
✓ marks the better value. EPA scores run 1–10 (10 is best). Volumes come from the EPA interior volume index and aren't published for every body style.
Audi A3 vs Mercedes-Benz AMG GT Hybrid across model years
- Audi A3
- Mercedes-Benz AMG GT Hybrid
Annual fuel cost of the most efficient configuration of each model year, at your prices. Click a point to open that year.
How they differ
Per EPA interior volume figures, the Audi A3 has more passenger space (87 vs. 81 cu ft); the Mercedes-Benz AMG GT Hybrid has more cargo space (16 vs. 8 cu ft).
Among 26 2026 subcompact cars, the Audi A3 ranks 9th and the Mercedes-Benz AMG GT Hybrid 17th for lowest fuel cost.
The powertrains differ: the Audi A3 is a conventional gas model, while the Mercedes-Benz AMG GT Hybrid is a full hybrid.
Frequently asked questions
Which is more fuel-efficient, the 2026 Audi A3 or the 2026 Mercedes-Benz AMG GT Hybrid?
Measured by cost to drive, the Audi A3. The Audi A3 is rated 28 MPG combined and the Mercedes-Benz AMG GT Hybrid 22 MPG (EPA, most efficient configuration of each).
How much does it cost to fuel the 2026 Audi A3 vs. the Mercedes-Benz AMG GT Hybrid per year?
At 15,000 miles a year with $3.95/gal premium gas, about $2,116 for the Audi A3 and $2,693 for the Mercedes-Benz AMG GT Hybrid.
Which has more cargo space?
The Mercedes-Benz AMG GT Hybrid, with 16 cu ft of luggage volume versus 8 cu ft (EPA interior volume index).
Audi A3 vs Mercedes-Benz AMG GT Hybrid in other years
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