2027 head-to-head · Midsize Car
2027 BMW 5 Series Hybrid vs Kia K4
MPG, range and what each one really costs you to fuel, from official EPA ratings and recalculated with your own gas and electricity prices.
The 2027 Kia K4 is the cheaper one to run. Driving 15,000 miles a year with $3.95/gal premium gas and $3.10/gal regular gas, it costs about $1,409 a year to fuel (33 MPG), versus $1,911 for the 2027 BMW 5 Series Hybrid (31 MPG). That's roughly $502 a year, or about $2,511 over five years.
Your numbers
Change these to match your driving and local prices. Every figure and chart on this page updates.
Fuel cost over 10 years
- BMW 5 Series Hybrid
- Kia K4
Side by side
| BMW 5 Series Hybrid | Kia K4 | |
|---|---|---|
| $1,911 | Your annual fuel cost | $1,409 |
| 31 MPG | Combined efficiency | 33 MPG |
| 29 MPG | City | 29 MPG |
| 35 MPG | Highway | 39 MPG |
| 98 cu ft | Passenger volume | 99 cu ft |
| 14 cu ft | Cargo volume | 15 cu ft |
| 284 g/mi | Tailpipe CO₂ (g/mi) | 269 g/mi |
| 6/10 | EPA fuel economy score | 6/10 |
| 6/10 | EPA greenhouse gas score | 6/10 |
| Hybrid | Powertrain | Gas |
| Premium gasoline | Fuel | Regular gasoline |
| 2.0L 4-cyl turbo | Engine / motor | 2.0L 4-cyl |
| 8-speed automatic | Transmission | CVT |
| RWD | Drivetrain | FWD |
✓ marks the better value. EPA scores run 1–10 (10 is best). Volumes come from the EPA interior volume index and aren't published for every body style.
BMW 5 Series Hybrid vs Kia K4 across model years
- BMW 5 Series Hybrid
- Kia K4
Annual fuel cost of the most efficient configuration of each model year, at your prices. Click a point to open that year.
How they differ
Per EPA interior volume figures, the Kia K4 has more cargo space (15 vs. 14 cu ft).
Among 12 2027 midsize cars, the BMW 5 Series Hybrid ranks 8th and the Kia K4 5th for lowest fuel cost.
The powertrains differ: the BMW 5 Series Hybrid is a full hybrid, while the Kia K4 is a conventional gas model.
Frequently asked questions
Which is more fuel-efficient, the 2027 BMW 5 Series Hybrid or the 2027 Kia K4?
Measured by cost to drive, the Kia K4. The BMW 5 Series Hybrid is rated 31 MPG combined and the Kia K4 33 MPG (EPA, most efficient configuration of each).
How much does it cost to fuel the 2027 BMW 5 Series Hybrid vs. the Kia K4 per year?
At 15,000 miles a year with $3.95/gal premium gas and $3.10/gal regular gas, about $1,911 for the BMW 5 Series Hybrid and $1,409 for the Kia K4.
Which has more cargo space?
The Kia K4, with 15 cu ft of luggage volume versus 14 cu ft (EPA interior volume index).
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