Husqvarna Automower 315X — two seasons of silent mowing

The verdict

Two full mowing seasons, two winters, 611 logged cutting sessions and one apologetic note to a hedgehog charity later, the 315X has earned its reputation the boring way: by turning up. On our 1,150 m² test lawn it held GPS-logged coverage above 97% in both seasons, and the cut — a few millimetres taken daily rather than a weekly scalping — produced the densest sward this lawn has had in a decade. At £1,899 new that was a hard sell against a teenager with a Honda. At £700–£950 used, with dealer history, it is one of the best-value robots on this site.

The caveats are real, and they are all about installation and history rather than the robot. The 315X is only as good as the boundary wire buried around your lawn, and a used one is only as good as the dealer servicing it did or didn't get. Buy one that has both — proper wire installation on a lawn under 1,500 m², stamped dealer service history — and it is superb. Buy one without, and you have purchased a £900 argument with a spool of wire.

How we tested

Our long-term mower protocol: a 1,150 m² single-zone British lawn (clay soil, two apple trees, a 12° slope at the rear), daily 4-hour cutting windows from March to October across two seasons, with the mower stored per Husqvarna's manual over both winters. Coverage comes from the 315X's own GPS logs cross-checked with dye-plate sampling; cut quality is our usual 10-point panel score; edge gap is a tape measure and patience.

The boundary wire is the product

Everything good and bad about a 315X traces back to a wire you will never see again. Ours was dealer-installed — pegged at the correct 30–35 cm offsets, corners swept rather than squared, a guide wire run up the middle of the slope — and the robot behaved like a machine that cost £1,899. For science, we then re-laid a 40-metre section ourselves, freehand, the way an optimistic Saturday installer would. Coverage in that zone fell to 91%, the mower began bump-turning off the fence, and the edge gap opened to 12 cm. Same robot, worse lawn.

This is why we bang on about installation in every used listing. A used 315X sold with the wire still in the seller's lawn is half a product: budget £150–£250 for a fresh dealer installation, or a full weekend and 300 m of wire if you do it yourself. And the 7 cm edge gap in our table is the good result — physics puts the blade disc inboard of the chassis, so no Automower cuts to the fence. You will still own a strimmer. Anyone who tells you otherwise is selling something, possibly this mower.

What two winters do to the battery

The 315X spends November to February in a shed, and how it spends those months is the biggest variable in used-market battery health. Ours was stored the way the manual demands — charged to full, powered off, kept indoors above 5°C — and after two winters the pack measures 89% of original capacity: runtime down from 68 to 61 minutes, which the mower silently absorbs by charging a little more often. Nobody watching the lawn would notice.

The counterexample matters more. We bench-tested a privately traded 315X of the same age that had wintered in an unheated garage on its charging station, trickling all winter at 2°C. Its pack held 71%, and its owner had no idea — the mower still mowed, it just spent 40% of its life docked. Replacement packs run £90–£130 plus fitting. On a used purchase, ask where the mower spent its winters before you ask anything else, and treat 'it lived outside' as a £120 discount, minimum.

Who shouldn't buy one

• Owners of complex multi-zone lawns over 1,500 m² — the 315X will physically cope to 1,600 m², but coverage sags and charge queuing grows on big split plots; step up to a 430X or 450X instead.
• Gardens with loose gravel paths crossing the lawn — the blades fling stones, the disc eats them, and our test set lasted nine days instead of six weeks.
• Gardens with hedgehogs — never run any robot mower at night. We scheduled ours 10am–4pm for both seasons at zero cost to coverage; a nocturnal schedule risks exactly the injuries UK hedgehog rescues now report routinely.
• Stripes enthusiasts — the 315X cuts in a random pattern and leaves a uniform green carpet, not a Wembley finish. That is the deal.
• Anyone unwilling to pay for installation or do it properly — see the wire section above; a badly laid perimeter turns an 8.4 into a 5.

Buying a used 315X — the 5-minute checklist

• Insist on the dealer service history. Husqvarna dealers log every service against the serial number — firmware, blade motor checks, winter servicing. A 315X with stamps is a known quantity; one without is priced £150 too high, whatever the ad says.
• Check blade-disc bearing play: mower off, grip the blade disc and rock it. Any perceptible wobble means wet clippings have worked into the bearing — a ragged cut now and a £60–£90 spindle repair later. This is the single most common fault we see on traded 315Xs.
• Ask where it wintered. Indoors, charged, off the dock is the right answer. 'In the garage on its charger' means demand a measured runtime test — a healthy pack should clear 55 minutes of continuous cutting.
• Read the fault log in the menu (Settings → Messages). A history of 'No loop signal' or 'Outside working area' points to a damaged wire at the seller's — fine — or a flaky loop sensor board — not fine, ~£110.
• Confirm the PIN and the Automower Connect pairing transfer to you before money moves. The GPS anti-theft is excellent, which is precisely why a locked, still-registered mower is scrap.

Husqvarna Automower 315X for sale now