2026 Toyota Sienna — Full Specifications
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The 2026 Toyota Sienna is a van/minivan powered by a 2.5L 4-cyl regular gasoline engine. Its most fuel-efficient configuration returns around 43 mpg (UK) / 36 mpg (US EPA) combined, with 42–43 mpg (UK) across all configurations. Owners often keep a Toyota Sienna workshop manual to hand for servicing and repairs.
Compared with the 2025 Toyota Sienna: Fuel economy is essentially unchanged at around 43 mpg (UK) combined. The engine line-up listed by EPA is unchanged. It carries the same 5★ overall NHTSA rating.
Full Specifications
| Engine | 2.5L 4-cyl |
|---|---|
| Transmission | Automatic (AV-S6) |
| Fuel Type | Regular Gasoline |
| Powertrain | Hybrid |
| Drive | Front-Wheel Drive |
| Body Style | Van/Minivan |
| Fuel Economy (UK) | 43 combined / 43 urban / 43 extra-urban mpg |
| Fuel Economy (US EPA) | 36 combined / 36 city / 36 highway mpg |
| CO₂ Emissions | 153 g/km |
| EPA Greenhouse Gas Score | 7 / 10 (10 = lowest emissions) |
| EPA Est. Annual Fuel Cost | $1,850 (15,000 mi/yr, US prices) |
Engine & Transmission Options
EPA lists 2 configurations for the 2026 Toyota Sienna, all with the 2.5L 4-cyl engine. Combined fuel economy ranges from 35 to 36 mpg (US), or 42 to 43 mpg (UK), depending on engine, transmission and drive. The headline figures at the top of this page describe the most fuel-efficient configuration.
| Engine | Transmission | Drive | MPG (UK) | MPG (US) | CO₂ g/km | Fuel cost / yr |
|---|---|---|---|---|---|---|
| 2.5L 4-cyl (Hybrid) | Automatic (AV-S6) | All-Wheel Drive | 42 | 35 (35/36) | 157 | $1,900 |
| 2.5L 4-cyl (Hybrid) | Automatic (AV-S6) | Front-Wheel Drive | 43 | 36 (36/36) | 153 | $1,850 |
MPG (US) shows combined, with city/highway in brackets. Highlighted row = the configuration used for the headline figures. Source: US EPA fueleconomy.gov.
Owner Essentials for the 2026 Toyota Sienna
Running Costs: 2026 Toyota Sienna
Covering around 8,000 miles a year in a 2026 Toyota Sienna at 43 mpg combined, expect roughly 846 litres of fuel annually — multiply by your local price per litre for a cost estimate. For US owners, the EPA estimates about $1,850 a year in fuel for the most efficient configuration (15,000 miles, national average prices). Work out exact fuel costs with the fuel cost calculator on 247Calculators.
Convert between MPG and L/100km with the unit converters on 247QuickTools. Not sure what tyre size fits? 247TyreCheck explains tyre sizing.
Planning a road trip? Grab a road trip packing list. Only need this car occasionally? See our buy vs rent comparison.
2026 Toyota Sienna Safety Ratings (NHTSA)
How It Compares
How does the Toyota Sienna compare to similar van/minivans? For context, van/minivans in our database average around 24 mpg (UK) combined — this model's 43 mpg figure is 19 mpg better than that average. Its 153 g/km CO₂ figure is 139 g/km lower than the 292 g/km average for van/minivans on this site. This comparison is based on 157 van/minivans in our dataset.
Toyota models in our database average about 34 mpg (UK) combined on their most efficient configuration; the 2026 Toyota Sienna's 43 mpg is 9 mpg above that make average. Its 153 g/km CO₂ figure is 63 g/km lower than the 216 g/km Toyota average.
Of the 17 Toyota Sienna model years we cover, the 2026 is the most economical on its best configuration (43 mpg UK combined). See every Toyota Sienna year side by side.
Last updated: · Data: US EPA (fueleconomy.gov) and NHTSA safety ratings 18 July 2026; NHTSA recalls and complaints 6 October 2026; Wikidata & curated EU catalogue 18 July 2026; European generation and engine data from Wikipedia 7 October 2026
Vehicle data sourced from manufacturer specifications. Always verify with your vehicle handbook or a qualified mechanic. This is a reference tool, not professional advice.
Recommended Accessories for the 2026 Toyota Sienna
Frequently Asked Questions
What engine does the 2026 Toyota Sienna have?
It's fitted with a 2.5L 4-cyl regular gasoline engine, paired with a automatic (av-s6) transmission.
What is the fuel economy of the 2026 Toyota Sienna?
The most efficient configuration returns around 43 mpg (UK) combined, or 36 mpg on the US EPA cycle. Across all configurations the UK combined figure runs from 42 to 43 mpg.
How much does the 2026 Toyota Sienna cost to fuel per year?
The US EPA estimates about $1,850 a year in fuel for the most efficient configuration, based on 15,000 miles of mixed driving and national average fuel prices. Your own cost will depend on mileage and local prices.
Does the 2026 Toyota Sienna have a good safety rating?
It holds an overall NHTSA rating of 5 stars, with 4 stars for frontal crash protection.
Is the Toyota Sienna's fuel economy good for a van/minivan?
Yes — it returns around 43 mpg (UK) combined, against a same-body-style average of roughly 24 mpg among the van/minivans we track, making it one of the more efficient options in its class.