What is the biggest problem with the Subaru Ascent?
The biggest problem reported with the Subaru Ascent is its continuously variable transmission (CVT), which can cause hesitation, shuddering, or other performance quirks. While many drivers experience solid reliability, CVT-related behavior remains the most frequent complaint among owners and reviewers.
Why the CVT matters in the Ascent
Here's why the CVT is at the center of reliability concerns: the Ascent uses Subaru's Lineartronic CVT, designed to optimize fuel economy and smoothness, but some models have exhibited wear or software-related issues that affect shifting feel and reliability over time. The issues tend to surface at low-speed maneuvers or under load, and they can be expensive to repair if the transmission needs replacement.
What owners report, by issue pattern
Below is a snapshot of common CVT and related problems reported by owners. The list reflects recurring themes across model years rather than universal faults.
- CVT-related symptoms such as hesitation and slow engagement during acceleration, particularly at low speeds or when starting from a stop.
- Shuddering or juddering as the vehicle transitions between gears or when under light throttle.
- Unusual CVT noises, including whine or clatter from the transmission area under load.
- Occasional transmission overheating or warning messages in certain driving conditions, sometimes prompting a trip to the dealer.
- Suspicion of oil-related issues around the engine/turbo area (referred to in some reports as oil leaks or consumption), which can be associated with the 2.4L turbo engine in some Ascent variants.
Concluding: These patterns show that while not all Ascent owners experience transmission problems, CVT-related symptoms are the most frequently cited reliability concern among owners and observers.
Service actions, recalls, and official guidance
Subaru and dealers have issued recalls and service bulletins aimed at improving CVT behavior and addressing related complaints. While not every VIN is affected, and some fixes are software-based, owners should check for active recalls and service campaigns for their specific vehicle.
- CVT software updates to smooth out shift timing and reduce harsh engagement.
- Service bulletins addressing transmission control module calibration and belt/pulley wear patterns.
- General recall campaigns that address potential CVT-related failures, engine oil consumption, or infotainment glitches tied to the vehicle’s systems.
In addition, prospective buyers and current owners are advised to verify any recall status for their VIN and discuss warranty options with their Subaru dealer, especially for higher-mileage examples.
Maintenance tips to mitigate CVT concerns
Good maintenance can help reduce the likelihood of CVT-related problems or catch them early before they become expensive repairs. The following steps can help you maintain an Ascent with a turbocharged engine and CVT.
- Use only Subaru-approved CVT fluid and adhere to the service schedule for CVT maintenance; discuss fluid change intervals with a dealer based on climate and driving conditions.
- Have the CVT fluid and filter inspected and changed if instructed by Subaru service bulletins or dealer recommendations.
- Avoid aggressive acceleration and minimize extended high-load driving that can stress the transmission.
- Keep engine oil within specification and address any turbo oil leaks promptly to reduce stress on the drivetrain.
- Stay current with software updates and recall-related fixes available through Subaru or your local dealer.
Concluding: Regular maintenance and staying updated with official fixes are the best defenses against CVT-related problems, and they can help preserve the Ascent’s reliability over time.
Summary
The Subaru Ascent’s most commonly reported problem is its CVT, which can cause hesitation, shuddering, or noise in the drivetrain. While the majority of drivers report satisfactory reliability, CVT behavior remains the primary concern among owners and reviewers. Regular maintenance, timely software updates, and awareness of recalls are key to mitigating this issue. For buyers, a thorough pre-purchase inspection and VIN-specific recall check are advisable to understand the current status of any vehicle.
