Parts for your 2018 Subaru Outback-Coil springs

2018 Subaru Outback Coil Springs: What They Do and How to Look After Them

Coil springs are absolutely relevant and fitted to the 2018 Subaru Outback. Technical references confirm this setup: the Subaru Factory Service Manual for the 2018 Outback (BS series) specifies a front MacPherson strut with a coil spring and a rear double-wishbone suspension with separate coil springs. Subaru’s official parts catalogues for the 2018 model also list front and rear coil springs as serviceable components, alongside struts, top mounts and insulators.

On the 2018 Outback, coil springs support the vehicle’s weight, set ride height, and work with the dampers to keep the tyres planted over corrugations, gravel and wet bitumen. They’re tuned to balance comfort with control, which is why the Outback feels settled on the open road and composed when it ducks down a rutted track. Properly functioning springs help maintain alignment angles, even tyre wear and stable braking, so they play a big role in safety as well as comfort.

Springs aren’t a routine replacement item, but they do fatigue over time—especially with frequent towing, heavy loads or lots of rough-road kilometres. During regular servicing, a good workshop will:

• Measure ride height side to side and front to rear to spot sagging.
• Inspect for broken coils, rust pitting, worn isolators and damaged seats.
• Listen for clunks or creaks over bumps that can hint at a cracked coil or perished mounts.

When replacement is needed, best practice is to fit springs in pairs on the same axle to keep handling balanced. It’s smart to replace related consumables at the same time—top mounts, rubber insulators and, if mileage is high, the struts/shocks. Any time springs are changed, a wheel alignment is recommended to protect tyre life and steering feel.

DIYers should only use a quality spring compressor and always torque fasteners at normal ride height, coil springs store a heap of energy and can be dangerous if mishandled. For owners chasing a touch more ground clearance, dedicated raised-rate springs are available for the Outback, choose reputable options matched to the dampers and be mindful that significant lift may affect alignment range and CV angles.

With the right checks and timely replacement, the Outback’s coil springs will keep the wagon riding level, quiet and confidence-inspiring across Aussie and Kiwi roads.

Popular questions about 2018 Subaru Outback coil springs

How long do the coil springs typically last?
In normal mixed driving, factory coil springs often last well over 150,000 km. High loads, regular towing and rough surfaces can shorten their service life. If ride height drops, the car leans to one side, or it feels floaty over bumps, it’s time for an inspection.

What are the signs the coil springs need replacing?
Common signs include uneven ride height, a noticeable droop at one corner, knocking noises over bumps, uneven tyre wear or a harsh, crashy ride. Visible cracks, chipped paint with heavy rust and broken “pigtail” ends are clear replacement triggers.

Should coil springs be replaced in pairs?
Yes—replace both springs on the same axle. Pairing keeps the spring rates and ride height consistent left to right, preserving safe handling and proper alignment. Mixing an old, sagged spring with a new one can pull the Outback off level and upset steering behaviour.