Electric coilovers let you change your suspension height from inside the car, without tools or a trip to the shop

Electric height-adjustable coilovers are suspension systems where a motor and control module let you raise or lower the car's ride height while parked or driving. Instead of manually adjusting spring perch collars with a wrench — the traditional method — you press a button or use a phone app to move the suspension up or down. The motor turns a threaded rod inside the coilover body, which changes how much the spring compresses and how far the wheel sits from the frame.

This matters because ride height affects how the car handles, looks, and clears obstacles. Lowering the suspension improves aerodynamics and cornering grip; raising it clears speed bumps, driveways, and rough roads. Manual coilovers force you to choose one height and live with it. Electric versions let you switch between heights in seconds, which is why they've become standard on high-end performance and luxury cars, and why aftermarket versions are now common in the tuning world.

Key Takeaways

  • Electric coilovers use a motor and threaded rod to adjust spring compression, changing ride height without removing the wheel or using tools.
  • The motor is powered by the car's battery and controlled by a module that may sit under the seat, in the trunk, or integrated into the factory infotainment system.
  • Ride height adjustment affects handling, ground clearance, and appearance, and electric systems let you switch between settings in seconds rather than hours.
  • Aftermarket electric coilovers range from basic two-stage systems (low and high) to multi-stage setups with memory presets and smartphone control.
  • Installation requires suspension work and electrical integration, so professional fitting is standard; some systems also need recalibration after major suspension changes.

How the motor and threaded rod change ride height

Inside each coilover body sits a threaded rod connected to the spring perch. A small electric motor — usually a brushless DC motor — turns this rod. As the rod spins, the perch moves up or down the coilover body, compressing or extending the spring. The motor stops when the desired height is reached, holding the suspension at that position without ongoing power draw.

The control module monitors the motor's position using a sensor, so it knows exactly where the perch sits. This feedback prevents the motor from over-rotating and damaging the spring or bottoming out the suspension. Most systems have mechanical stops as a safety layer — the motor straightforward cannot turn past the highest or lowest safe position.

The whole process takes 5 to 15 seconds per corner, depending on the system and how far you're moving the suspension. Some cars adjust all four corners simultaneously; others do it one at a time to manage current draw from the battery.

Control options: buttons, apps, and factory integration

Entry-level aftermarket systems use a straightforward dashboard-mounted switch or button pad with two or three preset heights — often labeled "low," "medium," and "high." You press the button, and the suspension moves to that setting. These systems are straightforward to install and don't require any computer integration.

Mid-range and premium systems add a control module with a small display screen, usually mounted under the seat or in the center console. These let you save multiple height presets, adjust individual corners separately, and sometimes set automatic height changes based on speed — for example, lowering the car at highway speeds to improve fuel economy and aerodynamics, then raising it when you exit.

Factory systems on luxury and performance cars integrate electric coilovers into the main infotainment screen and sometimes into a smartphone app. BMW's Adaptive M Suspension, for example, adjusts height and damping stiffness together based on driving mode. Some aftermarket systems now offer Bluetooth or WiFi control, letting you lower the car to clear a driveway or raise it for a speed bump without getting in the driver's seat.

Why aftermarket electric coilovers are different from factory versions

Factory electric coilovers are engineered as part of the whole suspension and chassis system. The car's computer knows the coilover is there and adjusts stability control, anti-lock braking, and suspension geometry calculations accordingly. The coilovers are tuned to work with the car's weight, tire size, and intended use.

Aftermarket electric coilovers are bolt-on replacements that work independently. They don't talk to the car's stability control or ABS system. This means they're more flexible — you can install them on almost any car with a standard suspension — but they also require more care during setup. If you change ride height significantly, you may need to recalibrate wheel alignment, and you should check that the suspension geometry stays within safe limits at both the highest and lowest settings.

Aftermarket systems also vary widely in build quality and reliability. Premium brands like Öhlins, KW, and Bilstein offer electric coilovers with multi-stage damping and sophisticated control modules. Budget options exist but often have slower motors, less precise positioning, or control modules that fail after a few years. The difference in price can be substantial — sometimes 2x to 3x — so understanding what you're buying matters.

Installation and electrical integration

Installing electric coilovers requires removing the old suspension and bolting in the new coilovers, which is the same basic work as manual coilovers. The difference is the electrical side: the motor wires, sensor wires, and power supply all need to be routed through the car and connected to the control module.

Most aftermarket systems draw power from the car's 12-volt battery through a relay and fuse. The control module is usually mounted under a seat or in the trunk to keep wires short and the module protected from heat and moisture. Button switches or a wireless remote are wired to the module, or a Bluetooth module is added if the system supports app control.

Professional installation is standard because it involves suspension geometry, electrical routing, and sometimes reprogramming or integration with the car's existing computer. A shop will also perform a four-wheel alignment after installation to may support the suspension geometry is correct at your chosen ride heights. If you plan to use multiple height presets, the shop should check alignment at each one to confirm the suspension stays within safe limits.

Performance and handling trade-offs

Lowering the suspension improves handling by lowering the center of gravity, reducing body roll in corners, and improving aerodynamics. On a track or a twisty road, a lower car is usually faster. But it also reduces ground clearance, can cause the suspension to bottom out on bumps, and may make the ride harsher if the springs and dampers aren't tuned for the lower height.

Raising the suspension increases ground clearance and can make the ride softer, but it raises the center of gravity and increases body roll. A car that's too high will handle poorly and may feel unstable in hard cornering. The sweet spot depends on what you're doing — a track car might spend most of its time low, while a street car might use a medium height for daily driving and lower only for specific situations.

Electric coilovers don't change the spring rate or damping — they only change how much the spring is compressed. So if your coilovers are set up for a certain ride height, moving to a very different height can change how the suspension behaves. A good setup uses a height range that keeps the suspension in its intended operating window, rather than extreme lows or highs that stress the springs and dampers.

Maintenance and common issues

Electric coilovers need the same basic maintenance as manual ones: keep them clean, check for leaks in the damper body, and inspect the springs for cracks or corrosion. The electrical components — the motor, sensor, and wiring — should be checked for corrosion and loose connections, especially if the car is driven in salt or wet conditions.

The most common failure point is the motor itself. If the motor stops responding or moves slowly, it may be a dead battery, a blown fuse, a corroded connector, or a motor that's seized. A shop can diagnose this by checking power at the connector and listening for the motor to hum when power is applied. Motor replacement is possible but usually costs several hundred dollars per corner.

Sensor failures are less common but can cause the suspension to get stuck at one height or refuse to move. If the control module can't read the sensor position, it won't let the motor run as a safety measure. Sensor replacement is usually cheaper than motor replacement but still requires professional work.

Frequently Asked Questions

Can I install electric coilovers on any car?

Most cars with a standard coilover-style suspension can accept aftermarket electric coilovers, but some require custom brackets or modifications. Cars with air suspension or multi-link rear suspensions may not have a direct bolt-on option. Check with the coilover manufacturer or a suspension shop to confirm fitment before buying.

How much does it cost to install electric coilovers?

The coilovers themselves range from about $1,500 to $5,000 or more per set, depending on the brand and features. Installation labor typically runs $800 to $1,500, and alignment adds another $150 to $300. Budget for potential modifications or custom brackets if your car requires them.

Will electric coilovers drain my battery?

No. The motor draws power only when you're adjusting height, which takes a few seconds. Once the suspension reaches the desired height, the motor stops and draws no current. The total energy used is small compared to your car's battery capacity, similar to running the power windows a few times.

Do I need to recalibrate the suspension after adjusting height?

You should have the wheel alignment checked after installation and again if you regularly use very different height settings. Suspension geometry changes with height, so alignment at your lowest setting may differ from alignment at your highest. A shop can check this and adjust as needed.

What happens if the motor fails while I'm driving?

The suspension stays at whatever height it was at when the motor stopped. You can continue driving safely — the coilover still functions as a normal shock absorber. You just can't adjust the height until the motor is repaired. Most systems also have a manual override or mechanical lock to prevent accidental movement if power is lost.