Why is my Subaru hard to steer?

Heavy steering in a Subaru is most often caused by a loss of steering assist from the electric power steering (EPS) system, a weak battery or charging issue, or by straightforward maintenance factors like under-inflated tires or misalignment. In newer Subarus, EPS is common, and electrical or sensor problems can reduce or remove assist, making turning feel noticeably harder.

Common causes of heavy steering in a Subaru

Here are the most likely culprits, spanning electronic control faults to basic maintenance issues. This overview applies to most contemporary Subarus that rely on EPS, with notes for older models that still use hydraulic assist.

• Electric power steering (EPS) fault or degraded assist due to a faulty motor, torque sensor, or control module


• Weak or failing battery or alternator causing EPS undervoltage and reduced assist


• Low or leaking hydraulic power steering fluid (applicable to older Subarus that still use hydraulic assist)


• Under-inflated tires, severe tire wear, or improper alignment increasing steering effort


• Wear or damage in the steering linkage, tie rods, steering rack, or binding in the steering column


• Suspension wear or damaged components that alter steering geometry

These issues can arise gradually or suddenly. If you notice warning indicators, unusual noises, or a sudden change in steering feel, treat it as a safety concern and seek professional help promptly.

Diagnostic steps you can take before visiting a shop

To isolate the cause, start with simple checks and escalate to professional diagnostics if the problem persists. The following steps provide a practical, safety-conscious approach.

1. Check tire pressure and inspect tires for uneven wear or damage; inflate to the recommended pressures shown on the door jamb sticker


2. Look for EPS warning lights or messages; if present, consider scanning the vehicle with an OBD-II code reader or at a service center


3. Check the battery voltage and charging system; with the engine off, the battery should read about 12.6V; with the engine running, charging voltage typically ranges from 13.5V to 14.5V


4. Inspect the power steering fluid level if your model uses hydraulic assistance; look for leaks around the reservoir, hoses, and the steering rack


5. Physically check for play in the steering linkage and inspect tie rods, steering rack, and steering column for looseness or damage


6. Evaluate wheel alignment and suspension components; look for unusual tire wear, worn bushings, or damaged struts or control arms


7. Test drive at both low speeds (parking maneuvers) and normal speeds to determine when steering feels heavy and whether assist behavior changes with speed

If issues persist after these checks, or you notice a sudden loss of steering assist, stop driving and contact a mechanic or Subaru dealer promptly.

Subaru EPS and safety notes

Most Subaru models rely on electric power steering to provide variable assist and several safety redundancies. EPS-related problems can sometimes be resolved with software updates or component replacement under warranty. It’s also wise to check for recalls or service campaigns specific to your model and year with a Subaru dealer.

When to seek professional help

Steering problems can affect vehicle safety. If you’re unsure about performing checks yourself, or you observe EPS warning indicators, abnormal steering feel, or unusual noises, schedule a professional diagnostic as soon as possible. Do not ignore signs that the steering system may be failing.

Summary

In most Subarus, heavy steering points to a power-steering issue (often EPS) or common maintenance factors like tire pressure, alignment, and worn suspension components. Begin with safe, simple checks—especially tire condition and warning lights—and pursue professional diagnosis if the problem persists or worsens. Regular maintenance and timely attention to EPS indicators help protect safety on the road.

Why does my car feel harder to steer?

A hard-to-turn steering wheel is often caused by low power steering fluid, a failing power steering pump, or a worn-out serpentine belt. Other potential causes include low tire pressure, a bad steering rack, or suspension issues like worn ball joints. 
Power steering system issues

• Low power steering fluid: This is a very common cause. The fluid lubricates and pressurizes the system to make steering easy. 
  • Signs: Whining or groaning noises when turning, or visible leaks under the car. 
  • Fix: Check the fluid level and refill if low. If the problem returns, you likely have a leak that needs to be repaired. 
• Failing power steering pump: The pump generates hydraulic pressure. If it fails, it can't provide enough assistance, making the wheel stiff. 
  • Signs: A constant whining or grinding noise from the engine. 
  • Fix: The pump will likely need to be replaced by a mechanic. 
• Damaged or worn serpentine belt: This belt drives the power steering pump. If it's loose, worn, or broken, the pump won't work effectively. 
  • Signs: A loose or slipping belt, or a broken belt. 
  • Fix: The belt needs to be replaced or tightened. 

This video shows how to diagnose a power steering pump and belt issue: 1mTop 5 Auto RepairsYouTube · Nov 4, 2023
Other common causes

• Low tire pressure: Underinflated tires increase rolling resistance, which makes steering feel heavy, especially at lower speeds. 
  • Fix: Check your tire pressure and inflate them to the recommended level. 
• Faulty steering rack: The steering rack connects the steering wheel to the wheels. Wear and tear can cause stiffness and jerky movements. 
• Suspension problems: Worn-out components like ball joints or tie rods can make steering more difficult and less responsive. 
• Misaligned wheels: An improper wheel alignment can cause resistance and make the steering wheel hard to turn. 

This video explains the role of wheel alignment in steering resistance: 1m4DIYersYouTube · Jul 31, 2020
What to do

1. Check for simple issues first: Start by checking your power steering fluid and tire pressure, as these are easy to address. 
2. Listen for noises: A whining or groaning sound often points to a power steering fluid or pump problem. 
3. Inspect the belt: Visually check the serpentine belt for any signs of wear, damage, or looseness. 
4. Seek professional help: If these checks don't resolve the issue, a mechanic should properly diagnose and repair the problem, as it could be a more complex issue with the steering rack, pump, or suspension. 

How to fix power steering on a Subaru?

If your Subaru uses a hydraulic power steering system, start by checking the power steering fluid level. Low fluid levels can lead to reduced steering performance and increased steering effort. Inspect the power steering fluid reservoir and add the recommended type of fluid if the level is below the suggested mark.

What is the most common problem in subarus?

The most common Subaru problems include issues with head gaskets, oil consumption, and transmission problems, particularly with older EJ engines and certain first-generation CVTs. Other frequent issues involve timing belt failures, electrical faults, and suspension wear. Many of these issues are more prevalent in specific older model years, though newer models can still experience problems like transmission wear.
 
This video discusses common issues with Subaru engines and transmissions: 58sThe OCD RepairmanYouTube · Jul 7, 2025
Engine and powertrain problems 

• Head gasket leaks: This is a notorious issue, especially in older models with EJ series engines, and can lead to coolant leaks, overheating, and other engine damage. 
• Engine oil consumption: Some models consume excessive oil, often due to worn piston rings or valve seals. 
• Timing belt failures: A failing timing belt can cause severe engine damage, and replacement should be done according to the manufacturer's schedule. 
• Transmission problems: Issues like slipping gears or rough shifting have been reported, particularly in some first-generation Lineartronic CVTs and certain models with higher torque loads. 

Other common issues

• Electrical issues: Various components can have faults, including sensors, alternators, and starters. 
• Suspension problems: Suspension components can wear out over time, leading to excessive noise, vibration, and poor handling. 
• Defective airbags: Some model years have had issues with airbags. 
• Faulty fuel pumps: Problems with fuel pumps have been reported in some models. 
• Weak windshields: Some owners have complained about the durability of the windshields. 

Tips to mitigate problems

• Perform regular maintenance: Consistent oil changes, fluid checks, and other scheduled maintenance can help prevent many issues and extend engine life. 
• Replace the timing belt on schedule: Adhering to the manufacturer's recommended timing belt replacement interval is crucial to avoid catastrophic engine damage. 
• Be mindful of specific model years: Researching specific model years for known problems can help you make a more informed decision, especially when buying used. 

Why is the Subaru steering wheel hard to turn?

A stiff steering wheel in a 2017 WRX often indicates low power steering fluid or a failing power steering pump. Check fluid levels first; low fluid can cause increased steering effort. Inspect for leaks in hoses or the steering rack. Also, worn steering rack bushings or tie rod ends can cause stiffness.