A simple question from a nervous learner driver kicked off an unexpectedly educational discussion among car owners, revealing that what many motorists assume is a faulty light is often a deliberate engineering decision.Posting on Reddit just days before a driving test, the owner of a 2023 Volkswagen Polo asked whether the car should have two reverse lights after noticing only one illuminated when selecting reverse. Concerned that the issue could result in failing or even being turned away from the test, the driver sought reassurance from fellow Volkswagen enthusiasts.The post reads:AdvertisementAdvertisement"I have my driving test in a few days, and I'm worried that if it's supposed to have two reverse lights, I'll get turned away from my driving test. I've searched it multiple times and it says that it's supposed to only have one but the more I think about it, I'm getting confused because every other car I've seen has two reversed lights. Can anyone tell me if my specific make and model is supposed to have two or one reverse light? 2023 Volkswagen Polo."It Is a Design Choice, Not a FaultThe overwhelming consensus from experienced owners was that the single reverse light is actually normal on many Volkswagen models sold outside the United States.Several commenters explained that the matching position on the opposite side of the rear light cluster is reserved for the rear fog lamp instead of a second reversing light. One of the highest rated replies simply stated, "The other side will be the rear fog light," with dozens of users confirming that this has been Volkswagen's approach for years.Another owner added that most modern Volkswagens will also warn the driver through the instrument cluster if an exterior bulb has actually failed, making an unnoticed lighting fault on a 2023 model relatively unlikely.AdvertisementAdvertisementOwners also noted that certain variants, including some Polo GTI models equipped with different rear lighting assemblies or LED packages, do feature two reversing lights. That distinction helps explain why drivers may notice different configurations on vehicles that appear almost identical.ChrisHepburn / Getty ImagesWhy Manufacturers Do ThisAs a matter of fact, Volkswagen is not the only manufacturer that uses a single reverse light. Many European and even some Japanese and American brands adopt this design, typically pairing one reverse lamp with a rear fog lamp to meet regional regulations.EU rules (ECE R48) require at least one rear fog lamp and allow either one or two reverse lamps: Apparently, manufacturers often choose one reverse lamp to simplify design and wiring. The rear fog lamp is brighter and helps visibility in poor weather, while the reverse lamp signals reversing. Having one of each balances safety requirements.Besides VW, brands that use a single reverse light include the 3 and 5 Series BMW (common asymmetric taillight design), A and Q-series Audi, C and E-Class Mercedes, XC60 and S40 Volvo, various Land Rovers, and more. Even some trims of the Chevrolet Malibu feature one reverse light.AdvertisementAdvertisementAlthough many commenters initially assumed the decision was driven purely by cost savings, the discussion highlighted a more nuanced explanation.European market vehicles are commonly equipped with a rear fog light to make cars more visible during dense fog or heavy precipitation.Since regulations generally require only one rear fog lamp and only one reversing lamp, manufacturers often assign one function to each side of the vehicle instead of installing duplicate lamps for both purposes. Forum discussions dating back several years show this configuration has appeared across multiple Volkswagen generations and other Volkswagen Group models.Owners Still Debate Whether It Is the Best SolutionEven after confirming the setup was intentional, many questioned whether it remains the best design from a safety perspective.Several argued that dual reverse lights provide better illumination when backing into poorly lit spaces while also making it more obvious to pedestrians that a vehicle is reversing. Others criticized the asymmetrical design, saying it often looks as though a bulb has failed.AdvertisementAdvertisementOne commenter described navigating busy parking lots as more difficult because a single illuminated lamp is less conspicuous to people walking behind vehicles. Another, who drives a work van equipped with twin reversing lights and an audible reverse warning, countered that distracted pedestrians often ignore those signals anyway.For the original poster, however, the community's verdict delivered the reassurance they were seeking. On many 2023 Volkswagen Polo models, seeing just one reverse light is not evidence of a malfunction. It is simply how the vehicle was designed.This story was originally published by Men's Journal on Jul 9, 2026, where it first appeared in the Gear section. Add Men's Journal as a Preferred Source by clicking here.