2020 Volkswagen Jetta GLI Bulb Size

Decision: I compiled this bulb size list to help you quickly identify correct replacement bulbs for a 2020 Volkswagen Jetta GLI, reducing guesswork and trips to a parts counter. Constraints included relying on manufacturer part references, physical socket types, and observed fitment variations, so the list emphasizes evidence and notes limitations where aftermarket sizing can differ. Options and comparison: the chart maps stock sizes alongside common aftermarket alternatives and highlights tradeoffs such as brightness, lifespan, and color temperature. My interpretation favors matching socket type first, then choosing an upgrade based on documented compatibility. Recommendation: use the chart as a starting point, cross-check with your owner’s manual and inspect the socket before purchase. Risks: incorrect bulbs may affect performance, legal compliance, or warranty coverage. Disclosure: some links may be affiliate links, and I may earn a commission at no additional cost to you; this supports ongoing maintenance of the chart.