What engine does the Subaru Tribeca have?
The Subaru Tribeca is powered by a 3.0-liter flat-six engine (a horizontally opposed six-cylinder) from Subaru’s EZ engine family, specifically the EZ30D in most markets.
In the United States and many other regions, the Tribeca’s 3.0-liter H6 was the sole engine option throughout its production years. This engine is known for smooth, refined operation and is typically paired with a 5-speed automatic transmission. The Tribeca’s engine design emphasizes low-end torque and comfortable highway cruising rather than high-revving performance.
Engine type and specifications
Below are the core specifications commonly associated with the Tribeca’s engine across model years and markets.
- Engine: Horizontal, inline-six (flat-six) configuration
- Displacement: 3.0 liters
- Engine family/code: EZ30D
- Valvetrain: DOHC, 24 valves
- Power output: Approximately 245 horsepower
- Torque: About 219 lb-ft of torque
- Fuel system: Multi-point fuel injection
- Transmission: 5-speed automatic (manual transmission was not offered for the Tribeca in US market)
These specifications describe the typical setup that powered most Tribeca models, contributing to a balanced blend of smoothness and reliability rather than outright sportiness.
Performance and market context
The 3.0-liter EZ30D engine in the Tribeca was designed to deliver steady on-road performance with adequate power for everyday driving, towing, and highway merging, while maintaining Subaru’s hallmark of smooth operation and AWD capability. The Tribeca did not widely offer an alternative larger engine in its production run, with the 3.0-liter H6 remaining the standard offering across most markets from launch in 2005 through its retirement in 2014.
Historical note and model-year context
Introduced for the 2005 model year as Subaru’s mid-size SUV, the Tribeca carried the brand’s signature horizontally opposed engine layout. The 3.0-liter H6 remained the defining powerplant for the model during its production life, aligning with Subaru’s broader use of flat-six engines in several models for smoother operation and low vibration.
Summary
In short, the Subaru Tribeca is powered by a 3.0-liter flat-six (EZ30D) engine, delivering roughly 245 hp and 219 lb-ft of torque, typically paired with a 5-speed automatic transmission. This setup emphasizes refined, steadier performance and reliability rather than high-revving sportiness, which aligned with the Tribeca’s role as a comfortable family SUV during its production years from 2005 to 2014.
What engine is in a Subaru Tribeca?
Subaru Tribeca
| Subaru Tribeca (WX) | |
|---|---|
| Layout | Front-engine, four-wheel drive |
| Powertrain | |
| Engine | 3.0 L EZ30 H6 (2006–2007) 3.6 L EZ36 H6 (2008–2014) |
| Transmission | 5-speed automatic |
Why did Subaru discontinue the Tribeca?
The Subaru Tribeca was discontinued primarily due to low sales and criticism of its design. Its sales fell significantly after 2007, reaching only 732 units in 2014, its final year. Additional factors included a cramped third row, mediocre fuel economy, and high maintenance costs, which the eventual replacement, the Subaru Ascent, was designed to address.
This video discusses the rumors of the Subaru Tribeca making a comeback: 53sUNCLE CARSYouTube · Oct 29, 2024
Key reasons for discontinuation
- Poor sales: Sales plummeted from a high of over 18,000 in 2007 to fewer than 1,000 by 2012, making it an unprofitable model.
- Criticized styling: The initial "B9" model had a polarizing and controversial design that didn't resonate with consumers, and despite a refresh, it never achieved strong sales.
- Design flaws: Critics and consumers pointed out that the third-row seating was small and cramped, and the vehicle had less cargo space than competitors.
- Fuel economy: The Tribeca's 3.6-liter engine was not fuel-efficient, with an EPA-estimated 18 combined mpg, which lagged behind competitors.
- High maintenance costs: The Tribeca was reported to be costly to maintain, with average annual repair and maintenance costs higher than its competitors.
You can watch this video to learn more about the rumored comeback of the Subaru Tribeca: 54sPoloToYouTube · Nov 11, 2024
What is the life expectancy of a Subaru 2.5 engine?
A Subaru 2.5L engine typically has a lifespan of 200,000 to 300,000 miles when properly maintained. However, a known issue with certain model years (especially 1996-2012) is head gasket failure, which can lead to engine damage and premature failure if not addressed. Proper maintenance, including regular oil changes, is crucial for longevity.
You can watch this video to learn about a common engine issue that can affect the lifespan of a Subaru engine: 1mScotty KilmerYouTube · Nov 4, 2022
Factors affecting engine life
- Head gasket issues: The EJ25 head gasket was a known problem in many 2.5L engines between 1996 and 2012. Failure could occur between 60,000 and 150,000 miles. Newer models have improved designs, but it's still a factor to be aware of, especially with older engines.
- Maintenance: Regular maintenance, such as oil changes, fluid checks, and tune-ups, is the most critical factor in extending engine life.
- Driving habits: Avoiding aggressive driving, sudden starts and stops, and driving within the speed limit can also help the engine last longer.
- Tire care: Keeping tires properly inflated and rotating them regularly helps the entire vehicle, including the engine, last longer.
Extending your engine's life
- Follow the maintenance schedule: Adhere strictly to the manufacturer's recommended service intervals for oil changes and other fluid services.
- Address issues promptly: If you notice any signs of problems, such as overheating or oil leaks, have them diagnosed and repaired by a qualified mechanic immediately. This can prevent minor issues from becoming major engine-damaging ones.
- Consider repairs: For engines with older head gasket designs, getting the head gaskets replaced proactively can be a worthwhile investment to ensure long-term reliability.
- Drive responsibly: Avoid hard acceleration and harsh braking whenever possible.
Is the Subaru Tribeca a reliable car?
The Subaru Tribeca's reliability is mixed, with average to below-average scores and a number of known issues, particularly concerning engine overheating, head gasket failures, and certain electrical problems. While its all-wheel-drive and comfortable ride are praised, its poor fuel economy and high ownership costs are frequent criticisms.
Reliability ratings and cost
- Mixed reliability scores: Reliability scores range from average to slightly below-average, placing it 18th out of 26 midsize SUVs, according to RepairPal.
- Average ownership costs: The average annual repair cost is about $563, which is considered average for its class, says RepairPal.
- High maintenance costs: Some owners report high maintenance costs and expensive parts, especially after the warranty expires, notes Kelley Blue Book.
Common issues
- Engine overheating: Both the 3.0L and 3.6L boxer engines are prone to overheating, which can lead to head gasket failure.
- Head gasket failure: The right head gasket can fail due to overheating, and repair is often expensive.
- Electrical issues: Problems like non-functioning keyless entry and radios have been reported.
- Timing chain/tensioner: The timing chain tensioner may need replacement around 125,000-185,000 miles.
This video explains some of the common problems found in Subaru Tribeca models: 1mSimple Mechanic AdviceYouTube · Nov 3, 2024
Other considerations
- Fuel economy: The vehicle is known for subpar fuel economy.
- Cargo space: The cargo capacity is considered limited by some reviewers, according to Edmunds.
- All-wheel drive: The standard all-wheel-drive system is a strong point, providing excellent performance in various weather conditions.
