TOYOTA SIENTA (2015)
Running costs, common problems, and reliability data based on 46 real MOT tests in 2024.
MOT Pass Rate
87%
Total Tests (2024)
46
Avg Mileage
54,156 mi
Est. Annual Cost
£1,572
Is the 2015 TOYOTA SIENTA reliable?
Good reliability. Occasional issues but generally solid. That's close to the national average of 82%.
At 9 years old, 87% of TOYOTA SIENTAs from 2015 passed their MOT first time in 2024. That's based on 46 tests across the UK. The average mileage at this age is 54,156 miles.
How does the 2015 TOYOTA SIENTA compare?
Mileage Analysis
The average 2015 TOYOTA SIENTA has 54,156 miles on the clock, which is in line with the expected 66,600 miles for a 9-year-old car, suggesting normal everyday use.
Best year to buy a TOYOTA SIENTA?
The most reliable year is the 2018 model with a 100% MOT pass rate, while the 2016 model has the lowest at 88%. The 2015 sits between the two at 87%.
How much does a 2015 TOYOTA SIENTA cost to run?
Based on 7,400 miles/year (UK average), current fuel prices, and repair likelihood from MOT pass rate data. Insurance not included.
TOYOTA SIENTA by Year
Checking a specific TOYOTA SIENTA?
Enter the reg plate to see its individual MOT history, mileage verification, and predicted costs.
About the 2015 TOYOTA SIENTA
The 2015 TOYOTA SIENTA is a small family car with a 1400cc hybrid engine. 46 of these vehicles were MOT tested in 2024, making it a rare model on UK roads. Among all cars from 2015, the average MOT pass rate is 83%, and this model beats that benchmark.
With an average of 54,156 miles at 9 years old, TOYOTA SIENTA owners drive about as much as the UK average.
2015 TOYOTA SIENTA Fuel Costs
The 1400cc hybrid engine offers a reasonable balance between performance and economy. Expect around 42 mpg in mixed driving, which works out to roughly £1,137 per year at current hybrid prices of 142p per litre (based on 7,400 miles per year). As a hybrid, real-world fuel costs will vary significantly depending on how much electric-only driving you do.
What does it cost to own a 2015 TOYOTA SIENTA?
Total estimated annual running cost is £1,572 (£131/month), broken down as £1137 fuel, £30 road tax, £55 MOT, and £350 predicted repairs. Repair costs are moderate, reflecting the 87% pass rate. Keeping on top of servicing will help avoid surprises.
TOYOTA SIENTA Reliability Trend
Newer TOYOTA SIENTAs show better MOT pass rates than older ones, with an average improvement of 11 percentage points.
Buying a Used 2015 TOYOTA SIENTA
At 9 years old, this is a solid used buy if you find one with good service history. Depreciation has levelled off, so you won't lose much more value. Focus on condition over mileage. If you're flexible on year, the 2018 model has the highest pass rate at 100%. Note: with only 46 tests in our data, these figures should be treated as indicative rather than definitive.
Alternatives to the 2015 TOYOTA SIENTA
If reliability is your priority, there are 2 similar cars with a higher MOT pass rate. Here are comparable hybrid cars with similar engines:
- AUDI Q3 (2016) 87% pass rate (same) from 32,293 tests
- TOYOTA AURIS (2015) 87% pass rate (same) from 27,086 tests
- TOYOTA C-HR (2017) 90% pass rate (+3%) from 24,351 tests
- HYUNDAI IONIQ (2017) 89% pass rate (+2%) from 8,993 tests