Mercedes GL X166 vs GLS X166: Which One Should You Import?
The Mercedes GL-Class and its successor the GLS are among the most popular luxury SUVs imported from the United States. Both share the same X166 platform, but there are meaningful differences that affect value, parts availability, and total import cost. Here's our breakdown.
Platform and Dimensions
Both vehicles are full-size, three-row luxury SUVs measuring roughly 5,130 mm in length with a 3,075 mm wheelbase. In practical terms, they're the same size. The GLS received a mild facelift with updated LED headlights, a revised grille, and a refreshed interior — but the bones are identical.
Engine Options Worth Importing
GL 450 / GLS 450: The 3.0L twin-turbo V6 producing 362 hp is the sweet spot for most importers. Strong performance, reasonable fuel consumption, and parts are widely available in Europe. This is the engine we recommend most often.
GL 550 / GLS 550: The 4.7L twin-turbo V8 with 449 hp delivers serious power but comes with higher excise taxes in many countries due to the larger displacement. Only worth it if your destination country doesn't penalize engine size heavily.
GL 350 / GLS 350d (diesel): Rare on US auctions since diesel was less common in America. If you find one, it can be a great deal — but verify the emissions equipment is intact.
Price Comparison on US Auctions
The GL (2013-2016 pre-facelift) typically sells for $8,000-$18,000 depending on mileage and condition. The GLS (2017-2019 facelift) commands $15,000-$30,000 for similar specs. The price gap narrows significantly for damaged vehicles.
For budget-conscious buyers, a clean GL 450 with moderate mileage offers extraordinary value — you're getting a vehicle that retailed for $65,000+ for under $15,000 at auction.
Registration Considerations
Both models register without issues in most countries. The key factor is the headlight configuration — US-spec models have different beam patterns that may need conversion or replacement for European compliance. Budget $500-$1,200 for headlight adaptation.
Our Verdict
Choose the GL X166 if you want maximum value. The mechanical package is nearly identical to the GLS, and savings of $5,000-$10,000 can be redirected toward shipping or a better-condition example.
Choose the GLS X166 if exterior appearance matters to you. The updated styling, LED headlights, and revised interior trim feel noticeably more modern. It also has a slight edge in resale value.
Either way, both are excellent import candidates with strong parts support and high owner satisfaction.
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