Cadillac OPTIQ vs Hyundai Ioniq 5: Specs Compared
Also searched as Hyundai Ioniq 5 vs Cadillac OPTIQ specs — both orientations show this same side-by-side comparison.
The Hyundai Ioniq 5 is the more efficient of the two: it reaches 115 mpg combined versus 105 mpg for the Cadillac OPTIQ, a 10 mpg advantage and costs about $50 less per year to fuel.
Across 4 measured categories, the Hyundai Ioniq 5 leads in 4. Figures are EPA test data, not manufacturer claims.
2026–2027
Cadillac OPTIQ
Standard Sport Utility Vehicle 2WD · 12 configurations
2022–2027
Hyundai Ioniq 5
Small Sport Utility Vehicle 4WD · 25 configurations
Head-to-head specifications
| Metric | Cadillac OPTIQ | Hyundai Ioniq 5 |
|---|---|---|
| Best combined MPG | 105 mpg | 115 mpg ✓ |
| Best city MPG | 117 mpg | 132 mpg ✓ |
| Best highway MPG | 93 mpg | 100 mpg ✓ |
| Lowest annual fuel costEPA estimate at 15,000 miles per year | $700 | $650 ✓ |
| Lowest CO2 output | Not available | Not available |
| Engines offered | Not available | Not available |
| Transmissions | Automatic (A1) | Automatic (A1) |
| Drivetrains | Rear-Wheel Drive, All-Wheel Drive | Rear-Wheel Drive, All-Wheel Drive |
| Fuel types | Electricity | Electricity |
| EPA class | Standard Sport Utility Vehicle 2WD | Small Sport Utility Vehicle 4WD |
| Years covered | 2026–2027 | 2022–2027 |
| Configurations on record | 12 | 25 |
Source: EPA fuel economy records via fueleconomy.gov. Best-case values across all recorded configurations for each model.
Cadillac OPTIQ vs Hyundai Ioniq 5 dimensions and size
The Cadillac OPTIQ is 7.1 inches longer than the Hyundai Ioniq 5 on a wheelbase 2 inches shorter, and 1,234.6 lbs heavier. Both clear the roughly 200 inches of usable length in a standard single garage bay.
| Dimension | Cadillac OPTIQ (2026) | Hyundai Ioniq 5 (2026) | Difference |
|---|---|---|---|
| Length | 189.8 in | 182.7 in | 7.1 in |
| Width (excl. mirrors) | 75.2 in | 74.4 in | 0.8 in |
| Height | 64.6 in | 63.4 in | 1.2 in |
| Wheelbase | 116.1 in | 118.1 in | 2 in |
| Curb weight | 5,203 lbs | 3,968 lbs | 1,235 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.
Cadillac OPTIQ vs Hyundai Ioniq 5: what the numbers mean
Running cost over five years: at the EPA's 15,000-mile-a-year assumption the Hyundai Ioniq 5 burns about $650 of fuel annually against $700 for the Cadillac OPTIQ. 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 and highway economy: the Hyundai Ioniq 5 leads in both cycles — 132 mpg city and 100 mpg highway against 117 and 93 mpg — so its fuel-efficiency advantage holds whether you commute in traffic or cover long highway miles.
Drivetrain and class: the Cadillac OPTIQ is offered with Rear-Wheel Drive, All-Wheel Drive, the Hyundai Ioniq 5 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 2WD and Small Sport Utility Vehicle 4WD respectively — the class drives the interior volume, cargo space and passenger space each one is measured against.
OPTIQ vs Ioniq 5: common questions
Which is better on gas, the Cadillac OPTIQ or the Hyundai Ioniq 5?
The Hyundai Ioniq 5 is the more efficient of the two: it reaches 115 mpg combined versus 105 mpg for the Cadillac OPTIQ, a 10 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 Hyundai Ioniq 5 runs about $650 a year in fuel at its most efficient configuration, versus about $700 for the Cadillac OPTIQ — a difference of roughly $50 per year.
What engines do the OPTIQ and Ioniq 5 offer?
Cadillac OPTIQ: no engine data on record. Hyundai Ioniq 5: no engine data on record.
Are they in the same vehicle class?
The EPA classifies the Cadillac OPTIQ as Standard Sport Utility Vehicle 2WD and the Hyundai Ioniq 5 as Small Sport Utility Vehicle 4WD, so they aren't a like-for-like match on size.
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