How reliable are 2021 Subaru Ascent?
Overall, the 2021 Subaru Ascent is generally reliable for a family three-row SUV, earning above-average reliability marks from major evaluators and showing typical maintenance costs for its class.
This article examines reliability from multiple angles — independent rating organizations, safety recall history, maintenance and ownership costs, and owner feedback — to provide a current snapshot of what to expect from a 2021 Ascent in 2024 and beyond.
Independent reliability ratings at a glance
These sources provide a high-level view of reliability across model years and segments. Note that scores can vary by trim, mileage, and prior maintenance.
- Consumer Reports typically rates the 2021 Ascent as above average for reliability within the three-row SUV category, with owners generally reporting few major issues in the first few years of ownership.
- J.D. Power's reliability and quality rankings place the Ascent in the upper tier among midsize SUVs for that model year, reflecting solid drivetrain and build quality relative to peers.
- Safety organizations and government testing agencies contribute context on safety and recall exposure, which meaningfully affect long-term reliability perceptions, though their focus is not exclusively on reliability.
Taken together, these sources indicate strong reliability for the 2021 Ascent compared with rivals in its class, with occasional issues that align with a modern family crossover. The exact score can vary by individual vehicle history.
Common reliability concerns for the 2021 Ascent
Owners and reviewers point to a few recurring themes, though most are solvable with routine maintenance or software updates and recalls completed.
- Infotainment and navigation glitches, including occasional freezes or lag in some model years, typically resolved with software updates or resets.
- Transmission/drive train behavior associated with Subaru's CVT, including occasional rough shifting or delayed engagement, generally well-supported by factory service bulletins and warranty coverage.
- Recall campaigns and safety-related issues, including campaigns that require dealer service to update software or replace components, which is common for modern vehicles and not unique to this model year.
Overall, while there are some recurring tech and drivetrain concerns, they do not disproportionately affect the 2021 Ascent compared to peers, particularly when the vehicle has had timely recall work and regular maintenance.
Maintenance costs and ownership experience
Maintenance costs for the 2021 Ascent are in line with other large-suburban-family SUVs from mainstream brands. Expect routine services, brake wear, tires, and potential major maintenance at typical intervals.
- Common maintenance items include scheduled oil changes, cabin air filter replacements, and tire replacements, with Subaru service intervals generally in line with industry norms.
- Fuel economy for the 2021 Ascent with the 2.4L turbo engine and all-wheel drive is competitive for a three-row SUV but varies with driving conditions and load; AWD adds some efficiency penalties compared with two-wheel-drive vehicles.
- Depreciation and resale value: Subarus tend to hold value reasonably well in the used market, particularly in regions where all-wheel drive is valued; however, depreciation curves are influenced by mileage, condition, and incentives.
For budgeting, consider potential tire replacements, lifetime maintenance, and the cost of extended warranties or certified pre-owned programs if you plan long ownership.
What to look for when buying a used 2021 Ascent
When shopping for a used 2021 Ascent, focus on the vehicle's service history, recall completion, and evidence of proper maintenance, especially for the transmission and electronics.
- Check for completed recalls with documentation from a Subaru dealer and ensure software updates have been applied as applicable.
- Review maintenance records for oil changes, filter replacements, brake work, and tires; verify the vehicle has been kept on a regular service schedule.
- Have a trusted mechanic inspect the CVT for smooth operation and listen for any unusual noises during acceleration or gear changes.
Because conditions vary, a well-documented service history and a clean inspection significantly improve the reliability profile of a used 2021 Ascent.
Bottom line
For buyers prioritizing reliability in a family-friendly three-row SUV, the 2021 Subaru Ascent generally sits above many competitors in its class, assuming regular maintenance and prompt recall service are completed. It offers standard all-wheel drive, strong safety and resale appeal, and a reassuring track record overall, with caveats about technology quirks and occasional drivetrain notes that are common to modern vehicles.
Summary: The 2021 Subaru Ascent delivers solid reliability for its class, supported by independent ratings and consistent ownership experiences. With routine maintenance, timely recall handling, and attention to software updates, it remains a competitive option among three-row SUVs for families and buyers seeking all-weather capability.
How long will a 2021 Subaru Ascent last?
13-17 years
Longevity is synonymous with Subaru, and the 2021 Subaru Ascent is no different. Designed for durability, the Ascent is predicted to continue to roll down the highway well into the 200,000 to 250,000 mile mark. Compared with yearly driving averages, expect your 2021 Subaru Ascent to reach 13-17 years of operation.
Does the Subaru Ascent have reliability issues?
We expect the 2025 Ascent will have about average reliability when compared to the average new car.
Does the 2021 Subaru Ascent have transmission issues?
If you don't routinely and consistently replace your fluids at least each 30,000 miles or so, you may find that your 2021 Subaru Ascent transmission will instantly slip.
Is 2021 a good year for Subaru Ascent?
The 2021 Ascent earned a five-star rating from the National Highway Traffic Safety Administration (NHTSA). While the latest model year hasn't been evaluated by the Insurance Institute for Highway Safety (IIHS), the 2020 Ascent was named a Top Safety Pick+ by the agency.
