The loudest Odyssey we track — 946 complaints and sixteen recalls, but the two worst failures are both covered free.

A manufacturing error means a connecting-rod bearing inside the engine can wear and seize, wrecking the motor and potentially stalling the van while you're driving. Owners in the federal record describe it viscerally: one had the engine throw a rod through the bottom of the block at 70 mph with his family aboard; another had a dealer trace an engine noise to a worn rod bearing at 109,000 miles; a third found oil in the cylinders with metal shavings at 145,000. Recall 23V-751 covers the 2018 and 2019 Odyssey (alongside several Pilot, Ridgeline and Acura years), and dealers inspect and repair or replace the engine free of charge. Owner letters went out in March 2024. This is the most consequential recall on the car and the first thing to verify by VIN. Even with the paperwork clean, treat any knock or tick at cold start as a reason to walk away.

One of the most valuable things to know about a 2018 Odyssey. Debris from the high-pressure fuel pump or from the injector machining process can wear or clog the fuel injectors, and Honda's software can misread the resulting sensor data as a failing catalytic converter. The result is a check-engine light with fault codes P0420 or P0430 (catalyst efficiency), P0300 to P0306 (misfire), or P219A and P219B (air-fuel ratio variation). Honda's Owner Notification Letter is explicit: 'American Honda is extending the warranty on the fuel injectors to 10 years from the original date of purchase or 150,000 miles, whichever comes first. This warranty extension provides coverage for the original owner and any subsequent owners.' A second Honda letter covering the 2018 extends the same ten-year, 150,000-mile terms to the whole repair, including the engine and transmission software updates. In plain terms: if the check-engine light comes on for one of those codes and the van is inside those limits, this should not cost you money. Ask the dealer to check the VIN before you pay anyone for a diagnosis.

On a minivan this is the cluster to read twice. Recall 18V-795 covers power sliding-door rear latch assemblies that can stick and fail to catch the striker, meaning a door can open while the van is moving; dealers replace both latches free. Recall 20V-437 covers water getting into the outer door-handle cables, which can then freeze in cold weather and stop the doors latching securely; dealers replace the cables free. Beyond the recalls, Honda's own technical bulletin for 2018 to 2022 vans admits an unresolved problem: the sliding-door windows stop partway and roll back down when you use the one-touch Auto-Up function, caused by a software mismatch between the switch and the window regulator. Honda's guidance to dealers is blunt — 'we are currently working on a fix, but there is currently no recommended repair' — and the workaround is to close those windows manually with light pressure on the switch. A dealership technician who services these vans confirms replacing front latch cables and rear latches under recall as routine work. Cycle both doors and both door windows through their full travel before you buy.

The 2018 uses a nine-speed automatic on most trims, and owner complaints cluster around how it behaves rather than around outright failure. The recurring descriptions are hesitation when you press the accelerator, jerking at low speed, a hard slam between gears, and dropping into limp mode — one owner reports the van losing propulsion at highway speed, another that it 'shifts out of drive and reverse to Park randomly' and won't leave first gear on a cold start. Recall 19V-299 addresses a related hazard directly: a loose battery terminal or a degraded battery can make the transmission control unit reboot, and on rebooting it may shift into Park, damaging the parking rod so the van can roll when parked. Dealers check the battery connections, update the software and check the parking rod, free. Honda also has a bulletin covering a torn gasket that lets the nine-speed's end cover leak fluid on 2018 and 2019 vans. A dealership technician working on these says transmission failures are uncommon across both the nine-speed and the later ten-speed — 'maybe three or four, which is not bad at all' — so treat this as a drive-it-hard item rather than an automatic disqualifier.

The remaining 2018 campaigns are mostly free inspections and software. Recall 18V-777 covers rear brake caliper pistons with insufficient coating that lets gas pockets form and reduces braking; dealers bleed the brakes. Recall 17V-397 covers a third-row centre seat belt whose tongue may not latch securely. Recall 23V-158 covers front seat-belt buckles that may not latch because the buckle channel fouls the release button. Recall 20V-066 covers a third-row power-outlet harness that can be pinched and short out, a fire risk. Recalls 20V-439, 23V-431 and 26V-423 all address the rearview camera or instrument panel going blank — the last of those, added in 2026, expands an earlier camera recall to cover water getting into the camera. Two airbag campaigns are open: 26V-227 covers software that can deploy the side and curtain airbags unexpectedly, and 26V-332 covers a front-passenger seat-weight sensor that can crack and short. Separately, and with no campaign at all, owners report rain leaking through the tailgate, pooling on the rear floor and getting into the power-tailgate control unit, with mould growing on the carpet. Two more recalls, 19V-213 and 21V-010, apply only to vans converted by Braun Corporation for wheelchair access — if yours is a standard van, they cannot apply to you.