Reviews are written from vehicles supplied by manufacturers for that purpose. Those cars are prepared differently from the ones sitting on a dealer lot, and the differences are not trivial.
Press fleets get preparation ordinary cars do not
A media fleet vehicle passes through a dedicated preparation process before each loan, with panel gaps checked, software verified and any rattle addressed.
The reasoning is straightforward. A car that arrives with a fault produces a review noting the fault, so the fleet operator eliminates faults before they can be noticed.
Retail cars receive a pre-delivery inspection too, but it is a shorter checklist performed under time pressure at a dealership rather than a curated handover.
Specification skews toward the top of the range
Manufacturers supply press cars in higher trims with option packages fitted, because those configurations show the vehicle at its most capable and photograph best.
That means the ride quality, interior materials, sound insulation and driver assistance behavior described in a review may belong to a version most buyers will not order.
Wheel and tire size is the frequent culprit. A larger wheel with a lower-profile tire changes ride and steering feel substantially compared with the base fitment.
Early build cars carry early build characteristics
First-drive events often use pre-production or very early production vehicles, assembled before the plant has worked through the initial ramp of a new model.
Some of those cars are better than production, having been assembled with unusual care. Others carry issues later fixed, which is why early reviews sometimes contradict owner experience.
Software adds a further wrinkle, since a launch fleet may run a build that changes before customer deliveries or shortly after through an update.
Mileage and history are invisible to the reader
A press car circulates among many drivers, most of whom exercise it hard. By the end of a fleet cycle the vehicle has had a demanding life in few miles.
Brake feel, tire condition and clutch behavior on a well-used loan car can differ noticeably from the same model with gentler history.
Reviewers who receive a car late in its fleet life sometimes report wear that says more about the previous twenty drivers than about the vehicle's durability.
What a reader can do about the gap
Noting the tested trim, wheel size and options is the practical correction, since those are usually stated and explain much of the difference.
Long-term tests and owner reports fill the remainder, because they follow a single car through ordinary use rather than a week of curated conditions.
A test drive of the exact configuration under consideration remains the only direct check, and it is the one step reviews cannot substitute for.