The Audi B8 and B8.5 A4 and S4 models, while similar, boast key distinctions. This guide outlines the critical differences between these two generations, focusing on exterior and mechanical updates.
The Audi B8 A4 debuted in the US market in 2009 and continued production until 2012, when the B8.5 A4 was introduced. But what exactly sets these two apart?
Let’s start with the front fascia. The B8 and B8.5 models showcase noticeable differences in their lower grilles. The B8 S4 features distinctive “fins” extending from the lower grilles onto the bumper, a feature absent on the B8 A4.
The B8.5 A4 and S4 exhibit more subtle variations in their lower fog light grilles. The horizontal strip across the B8.5 fog light grille features a noticeable “bend,” unlike the straight strip on the B8. Additionally, the B8.5 offers an optional full mesh grille in place of the horizontal slats found on the B8.
Beyond the grilles, the B8.5 boasts a comprehensive front-end redesign. This includes updated headlights, a new grille, redesigned fog lights, a revised bumper, a new hood, and new fenders. It’s crucial to understand that B8 and B8.5 front-end components are not interchangeable without a complete front-end conversion.
Mechanical differences also exist between the two generations. The B8.5 incorporates a newer, lighter crown-gear center differential and utilizes electromagnetic steering, while the B8 relies on hydraulic steering. Inside, the B8.5 features subtle redesigns of various interior components, including the plastic dash surround and climate control panel.
In conclusion, while seemingly similar at first glance, the Audi B8 and B8.5 A4 and S4 models offer distinct differences in exterior styling and mechanical components. The B8.5’s comprehensive front-end redesign, updated steering system, and lighter center differential are key factors to consider when comparing these two generations.
