Why do more cars now have a short spoiler above their rear window?

Is there some aerodynamic advantage to these short spoilers? Or maybe does it help to keep dirt from accumulating on the rear window? It seems like I'm seeing this feature more and more lately

✅Fitment: Compatible with 2022 2023 2024 BMW (G42) 2-Series Coupe Only ❗️ ❗️( Do Not Fit For Gran Coupe Or 4-Door ) ✅Material: Made From High Quality

Q1-TECH, Rear Window Roof Spoiler Compatible with BMW (G42) 2-Series 220i 230i M2 M240i Coupe (2022-2024), Real 3K Carbon Fiber Rear Window Roof Visor

QOTD: What's the Stupidest Automotive Feature?

Car Spoilers Explained: What Are The Different Types?

The Nissan Altima – A Look Back at Generations 1 to 4

Why do more cars now have a short spoiler above their rear window?

What Kind of Spoiler is Right for You?

What is a Spoiler on a Car and What Does it Do? - AusBody Works

2025 Toyota Camry Goes Hybrid-Only, Loses V6, Thinks America Still

BRAND - FINDAUTO provides a high-quality, affordable, complete range of Auto Accessories Body Parts, with which your car will be transformed with a

FINDAUTO ABS Rear Window Roof Spoiler Adjustable Fits for Most Cars Universal Trunk Lip Spoiler

The Tiny Rear Wipers On Modern Cars Are Pathetic But I Have A

What Does A Spoiler Do On A Car?