Why Your Car Pulls Right During Acceleration

By Curtis Castiglione

You are merging onto the highway, the lane is clear, and you step on the gas to get up to speed. Suddenly, you feel a distinct tug. The steering wheel wants to rotate to the right, and the vehicle begins to drift toward the shoulder. As soon as you let off the gas and maintain a steady speed, the car straightens out.

This sensation, often described as a wandering or veering feeling, can be frustrating and a bit nerve-wracking for any driver. While a car that constantly pulls to one side usually points to a simple wheel alignment issue, a car that only pulls during acceleration often involves more complex dynamics between your engine’s power and the components that put that power to the ground.

As a technician, I see this frequently. To help you get to the bottom of it, let’s look at the mechanical reasons why your vehicle is acting this way and what you should do next.

Why Your Car Pulls Right During Acceleration

When you accelerate, your vehicle undergoes a weight transfer. The front end lifts slightly as the weight shifts to the rear, and the drivetrain applies significant torque—or twisting force—to the wheels. Under steady cruising, minor mechanical weaknesses or alignment deviations are often hidden because there is less stress on the components.

However, the act of accelerating acts like a magnifying glass. It exposes worn parts, pressure imbalances, or design quirks in your steering system. Understanding whether the pull is a design characteristic or a mechanical failure is the first step in staying safe on the road.

Most Common Causes

1. Torque Steer

The most common culprit for a pull during acceleration, especially in front-wheel-drive vehicles, is a phenomenon called torque steer. This happens because the engine's power is not being distributed equally to the wheels. In many cars, the drive shafts (also called CV axles) are different lengths to accommodate the offset position of the transmission.

Because the angles and lengths differ, one wheel may receive more twist than the other momentarily, causing the car to pull. While a small amount of torque steer is normal under hard acceleration in high-horsepower front-wheel-drive cars, a sudden or persistent pull during normal driving usually indicates a mechanical problem that needs attention.

2. Tire Pressure and Uneven Tire Wear

Before assuming you have a major suspension failure, look at your rubber. If the tire pressure is lower on the right side than the left, that tire has more rolling resistance. When you accelerate, the engine has to work harder to turn that low-pressure tire, causing the car to lead in that direction.

Similarly, uneven tire wear can cause a pull. If one tire is more worn than its partner on the same axle, it essentially has a different diameter. This messes with the vehicle's handling balance and can cause the car to wander toward the side with the smaller, more worn tire.

3. Worn Suspension Components

Your car uses components like the control arm, tie rod, and various rubber bushings to keep the wheels pointed straight. These parts are under heavy stress during acceleration. If a control arm bushing is torn or has become soft, the force of acceleration can actually shift the physical position of the wheel, changing your vehicle alignment momentarily.

This is why the car might drive straight at a constant speed but veer sharply the moment you hit the gas. A worn tie rod or a failing CV axle can also cause similar symptoms by creating uneven resistance or allowing play in the steering geometry.

4. Sticking Brake Caliper

Less common, but still possible, is a sticking brake caliper. If a brake caliper on the right side isn't fully releasing, it creates a constant drag. You might not notice it while cruising because the engine's momentum masks it, but as you try to accelerate, that drag becomes a pivot point that pulls the car to the right.

How to Diagnose the Issue

To diagnose this at home, start with the easiest steps. Check your tire pressures with a digital gauge and ensure they match the manufacturer's recommendation found on the driver-side door jamb.

Next, visually inspect your tires for feathering (where the tread blocks feel smooth in one direction but sharp in the other) or cupping. These are signs of uneven tire wear and often point to suspension problems.

Finally, pay attention to the steering wheel during the pull. If the steering wheel physically turns itself to the right during acceleration, the issue is likely in the steering linkage or suspension. If the wheel stays straight but the car drifts, it is more likely an alignment or tire issue.

Is It Safe to Continue Driving?

If the pull is slight and predictable, you can usually drive to a service station safely. However, if the pull is violent or makes it difficult to maintain your lane, you are dealing with a safety hazard. A failure in the steering system or a snapped CV axle can lead to a total loss of control. If you feel any popping or clicking sounds accompanying the pull, it is best to have the vehicle towed.

Typical Repair Costs (U.S. Estimates)

When you take your car to a mechanic, expect a range of repair costs depending on the fix:

• Wheel Alignment: $80 – $150
• CV Axle Replacement: $250 – $500 (including labor)
• Control Arm or Tie Rod: $200 – $600 per side
• Brake Caliper Replacement: $250 – $450

Frequently Asked Questions

Can a bad alignment cause a pull only when accelerating? Yes, because the weight transfer and torque during acceleration can exaggerate a minor alignment issue that isn't noticeable at cruising speeds.

Is torque steer the same as a bad alignment? No. Torque steer is a result of engine power distribution and drivetrain design, while alignment refers to the physical angle at which your tires sit on the road.

Will new tires fix the pull? Only if the pull was caused by uneven tire wear or a manufacturing defect in the old tires. If there is a worn suspension part, new tires will eventually wear out in the same pattern.

Conclusion

A car pulling to the right under load is a signal that something in the drivetrain, tires, or suspension is no longer balanced. Start by checking your tire pressure, but don't ignore the problem if it persists. Addressing a worn bushing or a minor alignment issue now can prevent expensive tire replacements or dangerous handling failures down the road.

Disclaimer: Steering and handling characteristics vary significantly by vehicle make, model, drivetrain, tire condition, and maintenance history. Always consult your owner’s manual and have a certified technician perform a hands-on inspection.