Hyundai Sonata vs BMW i7
The BMW i7 is the more efficient of the two: it reaches 92 mpg combined versus 52 mpg for the Hyundai Sonata, a 40 mpg advantage and costs about $400 less per year to fuel.
Across 4 measured categories, the BMW i7 leads in 4. Figures are EPA test data, not manufacturer claims.
Head-to-head specifications
| Metric | Hyundai Sonata | BMW i7 |
|---|---|---|
| Best combined MPG | 52 mpg | 92 mpg ✓ |
| Best city MPG | 50 mpg | 91 mpg ✓ |
| Best highway MPG | 56 mpg | 95 mpg ✓ |
| Lowest annual fuel costEPA estimate at 15,000 miles per year | $1,200 | $800 ✓ |
| Lowest CO2 output | 100 g/mi | Not available |
| Engines offered | SIDI; Hybrid, SIDI & PFI, SIDI & PFI; with Stop-Start, SIDI & PFI; Stop-Start | Not available |
| Transmissions | Automatic (AM-S6), Automatic (AM-S8), Automatic (S8) | Automatic (A1) |
| Drivetrains | Front-Wheel Drive, All-Wheel Drive | All-Wheel Drive, Rear-Wheel Drive, 4-Wheel Drive |
| Fuel types | Regular, Regular Gas and Electricity | Electricity |
| EPA class | Large Cars | Large Cars |
| Years covered | 2015–2027 | 2023–2027 |
| Configurations on record | 81 | 34 |
Source: EPA fuel economy records via fueleconomy.gov. Best-case values across all recorded configurations for each model.
Sonata vs i7: common questions
Which is better on gas, the Hyundai Sonata or the BMW i7?
The BMW i7 is the more efficient of the two: it reaches 92 mpg combined versus 52 mpg for the Hyundai Sonata, a 40 mpg advantage and costs about $400 less per year to fuel.
Which costs less to run per year?
By EPA estimates at 15,000 miles a year, the BMW i7 runs about $800 a year in fuel at its most efficient configuration, versus about $1,200 for the Hyundai Sonata — a difference of roughly $400 per year.
What engines do the Sonata and i7 offer?
Hyundai Sonata: SIDI; Hybrid, SIDI & PFI, SIDI & PFI; with Stop-Start, SIDI & PFI; Stop-Start. BMW i7: no engine data on record.
Are they in the same vehicle class?
Yes — the EPA classifies both the Hyundai Sonata and the BMW i7 as Large Cars, so they compete directly.
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