Audi Q6 e-tron vs Cadillac OPTIQ: Specs Compared
Also searched as Cadillac OPTIQ vs Audi Q6 e-tron specs — both orientations show this same side-by-side comparison.
The Cadillac OPTIQ is the more efficient of the two: it reaches 105 mpg combined versus 104 mpg for the Audi Q6 e-tron, a 1 mpg advantage and costs about $50 less per year to fuel.
Across 4 measured categories, the Cadillac OPTIQ leads in 3. Figures are EPA test data, not manufacturer claims.
2025–2027
Audi Q6 e-tron
Standard Sport Utility Vehicle 4WD · 11 configurations
2026–2027
Cadillac OPTIQ
Standard Sport Utility Vehicle 2WD · 12 configurations
Head-to-head specifications
| Metric | Audi Q6 e-tron | Cadillac OPTIQ |
|---|---|---|
| Best combined MPG | 104 mpg | 105 mpg ✓ |
| Best city MPG | 112 mpg | 117 mpg ✓ |
| Best highway MPG | 97 mpg ✓ | 93 mpg |
| Lowest annual fuel costEPA estimate at 15,000 miles per year | $750 | $700 ✓ |
| Lowest CO2 output | Not available | Not available |
| Engines offered | Not available | Not available |
| Transmissions | Automatic (A1) | Automatic (A1) |
| Drivetrains | All-Wheel Drive, Rear-Wheel Drive | Rear-Wheel Drive, All-Wheel Drive |
| Fuel types | Electricity | Electricity |
| EPA class | Standard Sport Utility Vehicle 4WD | Standard Sport Utility Vehicle 2WD |
| Years covered | 2025–2027 | 2026–2027 |
| Configurations on record | 11 | 12 |
Source: EPA fuel economy records via fueleconomy.gov. Best-case values across all recorded configurations for each model.
Audi Q6 e-tron vs Cadillac OPTIQ dimensions and size
The Cadillac OPTIQ is 2 inches longer than the Audi Q6 e-tron on a wheelbase 2.4 inches longer, and 88.2 lbs lighter. Both clear the roughly 200 inches of usable length in a standard single garage bay.
| Dimension | Audi Q6 e-tron (2026) | Cadillac OPTIQ (2026) | Difference |
|---|---|---|---|
| Length | 187.8 in | 189.8 in | 2 in |
| Width (excl. mirrors) | 76.4 in | 75.2 in | 1.2 in |
| Height | 65 in | 64.6 in | 0.4 in |
| Wheelbase | 113.8 in | 116.1 in | 2.4 in |
| Curb weight | 5,291 lbs | 5,203 lbs | 88 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 Q6 e-tron vs Cadillac OPTIQ: what the numbers mean
Running cost over five years: at the EPA's 15,000-mile-a-year assumption the Cadillac OPTIQ burns about $700 of fuel annually against $750 for the Audi Q6 e-tron. That $50 yearly gap compounds to roughly $250 over five years and $400 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 versus highway split: the Cadillac OPTIQ is the stronger commuter at 117 mpg city, while the Audi Q6 e-tron pulls ahead on the interstate at 97 mpg highway. If most of your driving is stop-and-go traffic the city figure is the one to weigh; for long-distance highway mileage the reverse is true, and the two vehicles effectively swap places depending on how you drive.
Drivetrain and class: the Audi Q6 e-tron is offered with All-Wheel Drive, Rear-Wheel Drive, the Cadillac OPTIQ with Rear-Wheel Drive, 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 2WD respectively — the class drives the interior volume, cargo space and passenger space each one is measured against.
Q6 e-tron vs OPTIQ: common questions
Which is better on gas, the Audi Q6 e-tron or the Cadillac OPTIQ?
The Cadillac OPTIQ is the more efficient of the two: it reaches 105 mpg combined versus 104 mpg for the Audi Q6 e-tron, a 1 mpg advantage and costs about $50 less per year to fuel.
Which costs less to run per year?
By EPA estimates at 15,000 miles a year, the Cadillac OPTIQ runs about $700 a year in fuel at its most efficient configuration, versus about $750 for the Audi Q6 e-tron — a difference of roughly $50 per year.
What engines do the Q6 e-tron and OPTIQ offer?
Audi Q6 e-tron: no engine data on record. Cadillac OPTIQ: no engine data on record.
Are they in the same vehicle class?
The EPA classifies the Audi Q6 e-tron as Standard Sport Utility Vehicle 4WD and the Cadillac OPTIQ as Standard Sport Utility Vehicle 2WD, so they aren't a like-for-like match on size.
More Q6 e-tron comparisons
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Comparison id: audi-q6-e-tron-vs-cadillac-optiq