New vehicle designs launched with 203 problems per 100 vehicles in their first 90 days of ownership in 2025, compared with 190 for carryover models that simply carried an existing design into a new model year — a 13-point gap that’s the widest since J.D. Power’s Initial Quality Study was restructured in 2020. That gap isn’t a one-year blip, either. Follow those same freshly redesigned vehicles three years down the road and the difference doesn’t shrink — it more than triples. The data makes a case that’s easy to state and hard to act on if you’re shopping this fall: a brand-new redesign is a real reliability gamble, and the study behind it puts a number on exactly how big that gamble is.

The 90-Day Gap: 13 Points

Of the 18 all-new models J.D. Power tracked in its 2025 IQS, only two scored better than their segment’s average for initial quality — an unusually poor showing the study itself flagged as notable. Frank Hanley, J.D. Power’s senior director of auto benchmarking, offered one bit of context in the study’s release: new launches “require fewer repair visits than the carryover models,” meaning the problems owners report in year one tend to be more annoying than dealer-serious — glitchy infotainment pairing, finicky driver-assist alerts, trim pieces that don’t sit flush. Frequent, but survivable.

Three Years Later, the Gap Nearly Quadruples

The picture gets much less forgiving once J.D. Power revisits those same debut-year vehicles for its Vehicle Dependability Study, which surveys 2022 model-year owners after three years behind the wheel. Vehicles that were newly launched in 2022 racked up 241 problems per 100 vehicles by 2025 — versus just 196 PP100 for models that were already carryover designs that year. That’s a 45-point spread, more than three times the gap measured at 90 days. Only four of the 27 all-new 2022 models beat their segment average for long-term dependability. Whatever forgives a rough launch year in the showroom doesn’t seem to forgive it three years and one warranty-clock-tick later.

Why a Fresh Platform Front-Loads Risk

J.D. Power’s own explanation for the pattern points to timing rather than any single design flaw. Jason Norton, the firm’s director of auto benchmarking, noted in the VDS release that “supply chain issues, record-high vehicle prices, and personnel disruption in the wake of the pandemic were problematic” for the 2022 launch class specifically — meaning some of that particular generation’s numbers reflect a rough production window as much as a rough design. But the underlying mechanism behind first-year jitters is structural and shows up across redesign cycles regardless of the broader supply environment: a genuinely new platform means new tooling, a first production run without years of line-worker familiarity, and software and electronics architecture that hasn’t been through a full ownership cycle of real-world edge cases yet. A carryover model, by contrast, is running out the back half of a bug list that’s already been found and fixed.

The Repair-Visit Nuance Matters

It’s worth holding onto Hanley’s repair-visit distinction, because it changes what “more problems” actually means for a buyer. A car that racks up extra PP100 from touchscreen lag and a stiff third-row latch is a different ownership experience than one racking up the same score from starter and transmission issues — and J.D. Power’s own framing suggests debut-year problems skew toward the former, at least in the first 90 days. The Vehicle Dependability numbers three years out don’t carry the same reassurance, though; by then, the kind of issues serious enough to survive to the three-year mark are the kind that cost real money.

What a Buyer Actually Does With This

None of this means every redesign is a trap — J.D. Power’s own data shows a handful of all-new models beat their segment average in both studies, meaning some manufacturers do get a clean-sheet launch right. But the base rates argue for a specific kind of patience: if a completely redesigned model just hit showrooms, the second or third model year on that same platform is where the worst of the shakeout problems have typically already been found and engineered out, while the price often hasn’t moved much. The number worth remembering isn’t the 13-point gap at delivery — it’s the 45-point gap three years in, because that’s the one that shows up on a repair bill instead of a survey.