5 Series vs AMG GT 4-Door
Two makers, one class, one decision: the 5 Series from BMW or the AMG GT 4-Door from Mercedes-Benz. The spec sheets tilt toward the 5 Series, which leads in 1 of 2 areas and opens its biggest gap on fuel economy & range.
At a glance
- Fuel Economy & Range 5 Series wins
- Off-road & Towing Tie
- Fuel Economy & Range6.2
- Fuel Economy & Range0.3
Spec scores (0 to 10) are calculated from manufacturer specs against other models in the same class. See how the formula works. They are not reviews or user ratings.
Key Differences
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The 5 Series has better fuel economy
Few buyers will miss this one. The 5 Series brings 31 mpg to the table; the AMG GT 4-Door brings 21 mpg. The 5 Series uses less fuel on the standard combined cycle, which matters most if you drive a lot.
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The 5 Series has better city fuel economy
When it comes to fuel economy (city), the 5 Series wins comfortably with 28 mpg against 19 mpg. In town, driving style has a big effect, but the 5 Series starts from a better baseline.
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The 5 Series has better highway fuel economy
It’s a lopsided result (35 mpg for the 5 Series, 24 mpg for the AMG GT 4-Door) and one of the main reasons to choose between them. Speed, wind and load affect highway use a lot, but the official rating is a fair comparison point.
Design & Size
Engine & Performance
The 5 Series and the AMG GT 4-Door differ on engine & performance in ways that are described rather than measured. The table has the details.
Fuel Economy & Range
5 Series leads
In this area the 5 Series has a lead the AMG GT 4-Door can’t close. On the 5 Series, you get better fuel economy. Official figures rarely match real-world driving exactly, but the ranking between two cars tends to hold. The takeaway: on fuel economy & range, the 5 Series is the stronger car.
Fuel economy (combined)
5 Series: 31 mpg AMG GT 4-Door: 21 mpg Better combined fuel economy lowers your running costs every week, and the savings add up over years of ownership.
Fuel economy (city)
5 Series: 28 mpg AMG GT 4-Door: 19 mpg City fuel economy matters most if your driving is mostly short trips, traffic and stop-and-go commutes.
Off-road & Towing
Too close to call
The off-road & towing specs are close enough that neither gets the point. In short, off-road & towing is a draw; the decision lies elsewhere.
Safety & Tech
On safety & tech, the useful details are the names in the table: what each one uses, not a figure we can rank.
Full Specifications
Engine & Performance
| Spec | 5 Series | AMG GT 4-Door |
|---|---|---|
| Powertrain | Gas (48V mild hybrid) | Gas (48V mild hybrid) |
| Engine | 2.0L turbo I4 | 3.0L turbo I6 |
| Total system output | 255 hp | N/A (not specified) |
| Torque | 295 lb-ft | N/A (not specified) |
| Transmission | 8-speed automatic | 9-speed automatic (AMG MCT) |
| Drivetrain | RWD (xDrive AWD available) | AWD (4MATIC+) |
Fuel Economy & Range
| Spec | 5 Series | AMG GT 4-Door |
|---|---|---|
| Fuel economy (combined)EPA estimate where available | 31 mpg (winner) | 21 mpg |
| Fuel economy (city) | 28 mpg (winner) | 19 mpg |
| Fuel economy (highway) | 35 mpg (winner) | 24 mpg Thirstiest on the highway |
Space & Practicality
| Spec | 5 Series | AMG GT 4-Door |
|---|---|---|
| Seats | 5 seats | N/A (not specified) |
Off-road & Towing
| Spec | 5 Series | AMG GT 4-Door |
|---|---|---|
| AWD / 4WD available | Yes | Yes |
Safety & Tech
| Spec | 5 Series | AMG GT 4-Door |
|---|---|---|
| Basic warranty | 4 yr / 50,000 mi | 4 yr / 50,000 mi |
“N/A” means the manufacturer does not specify the value or we could not confirm it. Figures marked “manufacturer rating” are the maker’s own claims, not our measurements.
Which One Should You Buy?
Choose the 5 Series if…
- you drive a lot and want lower running costs (31 mpg vs 21 mpg combined)
- you mostly drive in town (28 mpg vs 19 mpg in the city)
- you cover long highway distances (35 mpg vs 24 mpg on the highway)
Choose the AMG GT 4-Door if…
- you trust Mercedes-Benz and want to keep things familiar
Also Compared
Frequently Asked Questions
Which is better for most people, the 5 Series or the AMG GT 4-Door?
On the specs compared here, the 5 Series makes more sense for most buyers; the AMG GT 4-Door doesn’t win a single measurable area.
Executive Summary
Let’s set the logos aside for a minute. The 5 Series and the AMG GT 4-Door are close competitors, and their spec sheets tell an interesting story. The 5 Series has better fuel economy, and for most people that’s not a small thing. There’s more, too: the 5 Series offers better highway fuel economy.
Choose by what you’d use most: fuel economy & range leads to the 5 Series, the things a spec sheet can’t capture leads to the AMG GT 4-Door.
My pick: the 5 Series.
Personal opinion based on the data above. Your priorities may differ.