While operating an unmodified 2019 awd honda hrv per the included owner's guide (page 86), the brake pedal was required during 100% of a 15 mile descent to maintain the vehicle"s speed within the posted 35 mph speed limit. the engine braking promised, in the "l" gear selector, by honda's owner's guide was lacking. this issue has been verbally brought before the distributor, in addition to being formally listed as a complaint to the manufacturer. this vehicle, to which i am contractually obligated to own for 36 months, has significantly less engine braking capacity than the precedent set by decades of like vehicles which have been released to consumers with engine braking adequate for safe mountain driving. my own opinion may be irrelevant in motivating a motor company to improve or repair their product, but i refer to the idaho cdl manual as an authority on safe practices and equipment for mountain driving. please refer to the idaho cdl manual, section 2.6.6 speed on downgrades "you must use the braking effect of the engine as the principal way of controlling your speed on downgrades. " as previously stated, the engine braking provided with the 2019 honda hrv is not adequate as a principal way of controlling speed on downgrades. i would guess that this problem may be related to a lack of proper tuning in the pcm (powertrain control module) regarding shifting set points. this presumption is based upon the added electrical shifting control equipment featured on a premium model, with a mechanically similar transmission. there was no disclaimer presented regarding engine braking or mountain driving before, during, or since the purchase of this vehicle. the consumer has little or no indication that this would be a problem during an urban test drive.