There's much of what you probably expect inside the 1-Series if you're familiar with BMW's lineup. It's a little less austere and more adventurous, but not overtly. So. Still, it remains easy to use with convenient controls.
Whether as a coupe or convertible, the 1-Series is more of a 2+2 than a vehicle with a full backseat. But in an appreciable nod to everyday practicality, the rear seat of the 2010 1-Series features both a pass-through and convenient 60/40 split-folding access to the trunk. The compact folding mechanism of the convertible's soft top even ensures usable trunk space with the top down.
The BMW 1-Series, as either a coupe or convertible, has been designed to seat four. ConsumerGuide points out that the front allows “ample room for adults on comfortable seats.” As can be expected from a car of this size, the second row receives mixed reviews. ConsumerGuide says that the backseat offers “enough headroom and legroom for an average-size adult to sit behind another average-size adult.” The reviewer adds a caveat, however, which is that “any front-seater over six-feet tall will delete rear legroom behind them.” Additionally, “elbow space is very tight in the coupe and even less in the convertible” for rear seat passengers. The folks at Kelley Blue Book chcaracterize the 1-Series' back seats as “comfortable but cozy.”
The coupe variants of the 1-Series feature 10 cubic feet of space, something Kelley Blue Book calls “reasonable.” If more room is required, the rear seats fold to accomodate larger items. Motor Trend notes that because the convertible's roof is fabric rather than steel, “it doesn't swallow too much trunk space.”
Aside from trunk room, there is not an excess of handy storage space inside the BMW 1-Series. ConsumerGuide states that “interior storage is limited to a small glovebox and smaller console box, along with a tiny console bin and map pockets.”
Most reviewers are impressed with the interior quality of the 1-Series. Kelley Blue Book lauds the fact that the “interior treatment of the 1 Series is anything but cheap.” Edmunds says, “Despite being the cheapest BMW sold, the vehicle's interior materials are consistent with its larger and more lavish siblings.” Cars.com, however, notes that on BMWs 2010 1-Series “the leather is less luxurious” compared to BMW's other models and that some of its plastic trim isn't quite as solid.
Excellent build quality contributes to the low level of ride noise, which ConsumerGuide says is “well checked,” and “top down, the convertible requires only slightly raised voices at highway speeds.” Motor Trend, however, points out that the convertible top “generates wind noise.”
Ride quality on the BMW 2010 1-Series is a function of just which trim level and options you select, but there aren't any big surprises here. ConsumerGuide finds that “the tested 128i convertible [rides] surprisingly well, easily soaking up smaller road blemishes and pavement heaves.” However, opting for the 135i brings a “sport suspension and 18-inch tires, a combination that reacts much more sharply to bad pavement, yet never feels harsh.” Not surprisingly, a 1-Series with the available sport suspension will ride a lot stiffer than one with the standard setup.