2018 Subaru Outback Towing Capacity & Payload

The 2018 Subaru Outback can tow between 2,700 pounds and 3,500 pounds, depending on the engine and drivetrain configuration. This makes it a capable crossover SUV for a variety of towing needs, from small utility trailers to compact travel trailers.

Quick answer

• Max Towing Capacity: 2,700-3,500 lbs
• Max Payload: 1,170 lbs
• GVWR: 4,497-4,564 lbs
• GCWR: 7,400-8,200 lbs
• Curb Weight: 3,593-3,893 lbs
• Hitch Class: Class II (for 2,700 lbs) or Class III (for 3,500 lbs)

Tow ratings by engine & trim

The towing capacity of your 2018 Subaru Outback varies based on the engine and drivetrain. Subaru provides these ratings in accordance with SAE J2807 standards.

Note: The payload capacity remains consistent across all trims at 1,170 lbs. However, always refer to the specific door jamb sticker on your vehicle for the most accurate payload figure, as it can vary based on factory options and accessories.

Tow package contents

Subaru typically does not offer a designated "tow package" as a single option on the 2018 Outback in the same way that some trucks do. However, the larger 3.6L engine models are inherently more capable for towing. Key components that contribute to towing capability include:

• Transmission Cooler: The Lineartronic CVT (Continuously Variable Transmission) in the Outback is designed to handle towing, but for heavier loads or extended towing, an external transmission cooler is highly recommended to prevent overheating. This is often an aftermarket addition for the 2.5L engine, while the 3.6L models tend to have more robust cooling capabilities for their drivetrain.
• Integrated Brake Controller: The 2018 Outback does not come with an integrated trailer brake controller from the factory. If your trailer has electric brakes (which is common for trailers over 1,000 lbs in gross weight), an aftermarket trailer brake controller will be necessary. This device connects to your vehicle's wiring and sends electrical signals to the trailer's brakes, allowing you to control them independent of your vehicle's brakes.
• Trailer Sway Control: The 2018 Subaru Outback includes Vehicle Dynamics Control (VDC), which incorporates trailer stability assist. This system can detect and help mitigate trailer sway by applying individual brakes to bring the trailer back in line, enhancing safety when towing.
• 7-pin Connector: A 4-pin trailer wiring harness is standard for basic lighting. For trailers requiring electric brakes and potentially other functions (like charging a trailer battery), a 7-pin connector is needed, which often requires an aftermarket conversion or installation.

5th-wheel & gooseneck

The 2018 Subaru Outback is not designed for 5th-wheel or gooseneck towing. These types of hitches are typically used with heavy-duty trucks and require a much stronger frame and bed-mounted hitch points than what a unibody crossover SUV like the Outback provides. Attempting to install such a hitch would be unsafe and could cause severe damage to the vehicle.

Weight distribution & WDH requirements

For trailers approaching the maximum towing capacity of your 2018 Subaru Outback, particularly those with a significant tongue weight, a Weight Distributing Hitch (WDH) is highly recommended. A WDH helps to distribute the tongue weight more evenly across all axles of the tow vehicle and trailer, restoring lost weight to the front axle of the tow vehicle. This improves steering, braking, and overall stability, reducing sag at the rear of the Outback.

• Tongue Weight: The maximum tongue weight for the 2018 Outback is typically 270 lbs for the 2.5L engine and 350 lbs for the 3.6L engine. This should generally be 10-15% of the total trailer weight. Always ensure your tongue weight falls within this range.
• When to use a WDH: Consult your owner's manual. Many manufacturers recommend a WDH for trailers exceeding 50% of the vehicle's maximum tow rating or for situations where significant rear sag is observed.

Real-world towing tips for this vehicle

• Understand Your Limits: Never exceed the maximum towing capacity or payload of your Outback. Always factor in the weight of passengers, cargo in the vehicle, and the trailer itself.
• Check Tire Pressure: Ensure both your Outback's and the trailer's tires are inflated to the recommended pressures for towing. This is crucial for stability and handling.
• Load Distribution: Properly load your trailer, aiming for 10-15% of the total trailer weight to be on the tongue. Too much or too little tongue weight can lead to swaying and loss of control.
• Brake Controller: If your trailer has electric brakes, a properly installed and adjusted aftermarket brake controller is essential for safe towing.
• Practice Driving: Towing changes how your vehicle handles. Practice turning, braking, and backing up in a safe, open area before hitting the open road.
• Increased Braking Distance: Remember that your combined vehicle and trailer will require significantly more distance to stop. Allow ample space between you and other vehicles.
• Maintenance: Ensure your Outback is well-maintained, especially the brakes, tires, and transmission, before towing.

Common towing-related issues

• Transmission Overheating: Especially with the 2.5L engine and heavier loads, the CVT can be susceptible to overheating. Monitoring transmission fluid temperature, especially on long grades or in hot weather, is advised. An aftermarket transmission cooler can be a wise investment.
• Rear Sag: Even within towing limits, a significant trailer tongue weight can cause the rear of the Outback to sag. This affects handling and headlight aim. A WDH is the best solution for this.
• Reduced Fuel Economy: Expect a noticeable drop in fuel efficiency when towing due to the extra weight and increased aerodynamic drag.
• Tire Wear: Towing puts additional stress on tires, potentially leading to faster wear, especially on the rear axle.

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