Jetta GLI Performance: Maintaining the new 8-speaker premium audio and tech upgrades in your 2026 sport sedan
Last month, a 2026 Jetta GLI came in from Redlands after its owner had noticed intermittent dropouts in the rear speaker output and an infotainment screen that had begun exhibiting occasional touch response delays during his commute on the 10 freeway. He had dismissed both issues as software quirks and hadn’t scheduled a diagnostic appointment…