Audi e-tron S vs BMW iX: Specs Compared
Also searched as BMW iX vs Audi e-tron S specs — both orientations show this same side-by-side comparison.
The BMW iX is the more efficient of the two: it reaches 97 mpg combined versus 75 mpg for the Audi e-tron S, a 22 mpg advantage and costs about $200 less per year to fuel.
Across 4 measured categories, the BMW iX leads in 4. Figures are EPA test data, not manufacturer claims.
2022–2023
Audi e-tron S
Standard Sport Utility Vehicle 4WD · 8 configurations
2022–2026
BMW iX
Standard Sport Utility Vehicle 4WD · 35 configurations
Head-to-head specifications
| Metric | Audi e-tron S | BMW iX |
|---|---|---|
| Best combined MPG | 75 mpg | 97 mpg ✓ |
| Best city MPG | 73 mpg | 99 mpg ✓ |
| Best highway MPG | 78 mpg | 94 mpg ✓ |
| Lowest annual fuel costEPA estimate at 15,000 miles per year | $1,000 | $800 ✓ |
| Lowest CO2 output | Not available | Not available |
| Engines offered | Not available | Not available |
| Transmissions | Automatic (A1) | Automatic (A1) |
| Drivetrains | All-Wheel Drive | All-Wheel Drive |
| Fuel types | Electricity | Electricity |
| EPA class | Standard Sport Utility Vehicle 4WD | Standard Sport Utility Vehicle 4WD |
| Years covered | 2022–2023 | 2022–2026 |
| Configurations on record | 8 | 35 |
Source: EPA fuel economy records via fueleconomy.gov. Best-case values across all recorded configurations for each model.
Audi e-tron S vs BMW iX dimensions and size
The BMW iX is 2 inches longer than the Audi e-tron S on a wheelbase 2.8 inches longer, and 330.7 lbs lighter. Both clear the roughly 200 inches of usable length in a standard single garage bay.
| Dimension | Audi e-tron S (2023) | BMW iX (2026) | Difference |
|---|---|---|---|
| Length | 192.9 in | 194.9 in | 2 in |
| Width (excl. mirrors) | 76.4 in | 77.2 in | 0.8 in |
| Height | 64.2 in | 66.5 in | 2.4 in |
| Wheelbase | 115.4 in | 118.1 in | 2.8 in |
| Curb weight | 6,019 lbs | 5,688 lbs | 331 lbs |
Width excludes mirrors; add 8–12 inches for mirrors out. Figures are for the newest model year on record for each vehicle. See both drawn to scale.
Audi e-tron S vs BMW iX: what the numbers mean
Running cost over five years: at the EPA's 15,000-mile-a-year assumption the BMW iX burns about $800 of fuel annually against $1,000 for the Audi e-tron S. That $200 yearly gap compounds to roughly $1,000 over five years and $1,600 over eight — often more than the price difference between two trims of the same vehicle, and the single largest running-cost line item separating these two.
City and highway economy: the BMW iX leads in both cycles — 99 mpg city and 94 mpg highway against 73 and 78 mpg — so its fuel-efficiency advantage holds whether you commute in traffic or cover long highway miles.
Drivetrain and class: the Audi e-tron S is offered with All-Wheel Drive, the BMW iX with All-Wheel Drive. All-wheel drive typically costs one to two mpg combined against the same vehicle in front- or rear-wheel drive, which is worth remembering when the gap between these two is small. The EPA classes them as Standard Sport Utility Vehicle 4WD and Standard Sport Utility Vehicle 4WD respectively — the class drives the interior volume, cargo space and passenger space each one is measured against.
e-tron S vs iX: common questions
Which is better on gas, the Audi e-tron S or the BMW iX?
The BMW iX is the more efficient of the two: it reaches 97 mpg combined versus 75 mpg for the Audi e-tron S, a 22 mpg advantage and costs about $200 less per year to fuel.
Which costs less to run per year?
By EPA estimates at 15,000 miles a year, the BMW iX runs about $800 a year in fuel at its most efficient configuration, versus about $1,000 for the Audi e-tron S — a difference of roughly $200 per year.
What engines do the e-tron S and iX offer?
Audi e-tron S: no engine data on record. BMW iX: no engine data on record.
Are they in the same vehicle class?
Yes — the EPA classifies both the Audi e-tron S and the BMW iX as Standard Sport Utility Vehicle 4WD, so they compete directly.
More e-tron S comparisons
More iX comparisons
Comparison id: audi-e-tron-s-vs-bmw-ix