In the Corolla’s case, it’s a well-executed technology that pairs with swift faux kickdown when the car is in motion we suspect many owners won’t even know they’re using a CVT. Toyota, for example, has a fixed-ratio 1st gear in the CVT for its 2.0-liter Corolla, something that adds much-needed linearity starting off. Faux upshifts mitigate some of this, but some automakers have gone to even greater lengths to address it. Again, thresholds vary, and it’s worth noting that such programming once again comes at the expense of overall efficiency.Ī third, related, complaint of CVTs involves engine revs taking too long to build - or building in a nonlinear fashion - when accelerating from a stop. In response to that, many modern CVTs now expedite such revving depending on how hard you press the accelerator, to give the sensation of a kickdown. CVTs, by contrast, tend to raise revs in slower fashion, a chief driver of the rubber-band complaint. The lead-up can incur lag, depending on the car, but the downshift itself typically comes in a sudden manner known as kickdown. When you step on the accelerator for more power while already in motion (passing slower traffic on the highway, for example), a traditional automatic will downshift one or more gears to send engine revs higher and enable more power. More noticeable in everyday driving is the tendency for modern CVTs to fake a downshift. Although such programming can mitigate engine droning, it’s inherently inefficient - CVTs are efficient because they lack fixed ratios - so, in our experience, most examples limit such behavior to harder acceleration and high revving. These tweaks are nothing less than a small sacrifice of efficiency for broader consumer acceptance. Most modern CVTs employ programming to mimic the upshift sensation of a traditional automatic, picking temporary fixed ratios to allow the familiar rise, momentary drop and rise again in revs. If you’re among them, note that not all experiences are the same. More than a few of you probably landed on this list because of that. Perhaps because of the driving experience, some shoppers may want to avoid cars with CVTs.
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