AMG model vs AMG Line - what's the difference?

The fundamental difference is an AMG Line adds cosmetic elements, while an AMG model features a high performance engine.

2022 Mercedes-Benz A-Class Sedan Review, Pricing, Mercedes A-Class Sedan Models

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AMG vs Regular Mercedes: Key Distinctions

Mercedes creates AMG Sport model line, previews GLE

What's the DIFFERENCE between Mercedes-Benz SE, Sport & AMG Line on the C-Class 2018 model?

A-Class Vs. C-Class: What's the Difference Between these Mercedes Models?

AMG Line vs Sport Mercedes A-Class Forum

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A Look Back at All the Mercedes-AMG Black Series Models

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Mercedes A Class AMG Sport review

What's the DIFFERENCE between Mercedes-Benz SE, Sport & AMG Line on the C-Class 2018 model?

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What is the difference on Mercedes Benz AMG line? - Quora