Carnival vs Sienna
If you’re shopping for a car in the minivan class, the Carnival and the Sienna are likely both on your shortlist. If you only read one line, make it this: the Sienna takes 2 of 4 compared areas, and the fuel economy & range gap is the one to look at first.
At a glance
- Engine & Performance Carnival wins
- Fuel Economy & Range Sienna wins
- Space & Practicality Tie
- Off-road & Towing Sienna wins
- Fuel Economy & Range0.0
- Off-road & Towing0.0
- Fuel Economy & Range10.0
- Off-road & Towing3.3
Spec scores (0 to 10) are calculated from manufacturer specs against other models in the same class. See how the formula works. They are not reviews or user ratings.
Key Differences
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The Sienna has better fuel economy
The Carnival is clearly behind on fuel economy (combined) (21 mpg against 36 mpg), and that’s one of its biggest weak spots in this matchup. Official figures rarely match real-world driving exactly, but the ranking between two cars tends to hold.
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The Carnival has 42 hp more power
On this line of the spec sheet, the Carnival is in a different league: 287 hp, next to 245 hp for the Sienna. The Carnival’s extra output gives it more in reserve when you need to get up to speed.
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The Sienna has better city fuel economy
For fuel economy (city), the Sienna leads by a wide margin: 36 mpg versus 18 mpg. In town, driving style has a big effect, but the Sienna starts from a better baseline.
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The Sienna has better highway fuel economy
This is a headline difference. With 36 mpg to the Carnival’s 26 mpg, the Sienna has a lead that’s easy to see on paper and in practice. The Sienna uses less fuel on the highway, a real saving on road trips and long commutes.
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The Sienna has available all-wheel drive
Some features are nice extras; for some people, available all-wheel drive is a deal-breaker. Only the Sienna has it. All-wheel drive helps you get going on slippery roads, but good tires matter just as much for stopping and turning.
Design & Size
Dimensions
| Spec | Carnival | Sienna |
|---|---|---|
| Width (no mirrors) | 78.5 in | N/A (not specified) |
| Wheelbase | 121.7 in | N/A (not specified) |
Engine & Performance
Carnival leads
The Carnival is the clear pick if engine & performance is what you care about most. The Carnival takes this one with 42 hp more power. More power helps with merging, overtaking and climbing hills, especially with passengers and luggage on board. Anyone shopping mainly on engine & performance should start with the Carnival.
Total system output
Carnival: 287 hp Sienna: 245 hp Power is only part of the story; weight, gearing and torque delivery shape how quick a car feels.
Fuel Economy & Range
Sienna leads
The Carnival has a tough time in the fuel economy & range section, where the Sienna pulls well ahead. The Sienna comes with better fuel economy. The Sienna uses less fuel on the standard combined cycle, which matters most if you drive a lot. If this section decides it for you, choose the Sienna.
Fuel economy (combined)
Carnival: 21 mpg Sienna: 36 mpg Better combined fuel economy lowers your running costs every week, and the savings add up over years of ownership.
Fuel economy (city)
Carnival: 18 mpg Sienna: 36 mpg City fuel economy matters most if your driving is mostly short trips, traffic and stop-and-go commutes.
Space & Practicality
Too close to call
Neither the Carnival nor the Sienna has a real advantage in the space & practicality category. On space & practicality alone, you can’t go far wrong with either.
Off-road & Towing
Sienna leads
The Sienna does a little better in the off-road & towing section, though nothing here is a deal-breaker for the Carnival. On the Sienna, you get available all-wheel drive. The Sienna offers all-wheel drive; the Carnival doesn’t, which matters if you face harsh winters. On off-road & towing alone, the Sienna gets the nod.
AWD / 4WD available
Carnival: no Sienna: yes Available all-wheel drive improves traction in rain, snow and on loose surfaces.
Safety & Tech
Names, not numbers: the safety & tech rows below show what each one is built with, and it’s worth reading them side by side.
Full Specifications
Engine & Performance
| Spec | Carnival | Sienna |
|---|---|---|
| Powertrain | Gas | Hybrid |
| Engine | 3.5L V6 | 2.5L I4 hybrid |
| Total system output | 287 hp (winner) | 245 hp Least powerful in class |
| Torque | 269 lb-ft | N/A (not specified) |
| Transmission | 8-speed automatic | eCVT |
| Drivetrain | FWD | FWD (AWD available) |
Fuel Economy & Range
| Spec | Carnival | Sienna |
|---|---|---|
| Fuel economy (combined)EPA estimate where available | 21 mpg Thirstiest in class | 36 mpg (winner) Most efficient in class |
| Fuel economy (city) | 18 mpg Thirstiest in the city | 36 mpg (winner) Best city economy |
| Fuel economy (highway) | 26 mpg Thirstiest on the highway | 36 mpg (winner) Best highway economy |
Space & Practicality
| Spec | Carnival | Sienna |
|---|---|---|
| Seats | 8 seats | 8 seats |
| Cargo (behind rear seats) | 40.2 cu ft Biggest cargo area | N/A (not specified) |
| Cargo (seats folded) | 145.1 cu ft | N/A (not specified) |
Off-road & Towing
| Spec | Carnival | Sienna |
|---|---|---|
| Max towing | 3,500 lb | 3,500 lb |
| AWD / 4WD available | No | Yes (winner) |
Safety & Tech
| Spec | Carnival | Sienna |
|---|---|---|
| Largest touchscreen | 12.3 in | N/A (not specified) |
| Driver-assist suite | Kia Drive Wise | N/A (not specified) |
| Basic warranty | 5 yr / 60,000 mi | 3 yr / 36,000 mi |
Dimensions
| Spec | Carnival | Sienna |
|---|---|---|
| Width (no mirrors) | 78.5 in | N/A (not specified) |
| Wheelbase | 121.7 in | N/A (not specified) |
“N/A” means the manufacturer does not specify the value or we could not confirm it. Figures marked “manufacturer rating” are the maker’s own claims, not our measurements.
Which One Should You Buy?
Choose the Carnival if…
- you want more power (287 hp vs 245 hp)
- you trust Kia and want to keep things familiar
Choose the Sienna if…
- you drive a lot and want lower running costs (36 mpg vs 21 mpg combined)
- you mostly drive in town (36 mpg vs 18 mpg in the city)
- you cover long highway distances (36 mpg vs 26 mpg on the highway)
- you face snow, ice or slippery back roads
Also Compared
Frequently Asked Questions
Should I buy the Carnival or the Sienna?
The Sienna wins more of the areas we compared, so it’s the safer pick unless having 42 hp more power matters more to you than the rest.
Executive Summary
Let me cut through the brand noise around the Carnival and the Sienna. I think the Sienna makes its strongest case with better fuel economy. Another thing in the Sienna’s favor is better highway fuel economy. The Carnival isn’t without merit: 42 hp more power is a real advantage.
For engine & performance, the Carnival fits better. For fuel economy & range, the Sienna is the better match.
My pick: the Sienna; the one scenario where I’d reach for the Carnival is if you need 42 hp more power, which only the Carnival offers.
Personal opinion based on the data above. Your priorities may differ.