New BMW 3 Series & Mercedes-Benz C-Class vs Audi A4

BMW has reinvented its 3 Series with new underpinnings, fresh styling and a revised interior in a bid to reclaim leadership of the executive car class against the Audi A4 and Mercedes-Benz C-Clas...

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What Car? team
01 March 2018

Audi A4 infotainment

Infotainment systems

Audi A4

Audi’s MMI is still one of the easiest systems to use, with a dial controller and well-designed menus, although the screen is small by today’s standards (7.0in or 8.3in, as shown, if you go for the £1395 Technology Pack). It still has plenty of features, though, including smartphone mirroring and connected online services. The Comfort and Sound Pack (£1295) adds a punchy 10-speaker Bang & Olufsen hi-fi. 

BMW 3 Series infotainment

The 3 Series gets BMW’s very latest iDrive system, with revised graphics and menus and a 10.3in screen of brilliant resolution. It’s easiest to use because it’s as responsive as the A4’s but can be controlled by touch as well as by a rotary dial, or by using the surprisingly effective voice control. However, it’s a shame that Apple CarPlay, like most of the features, requires a subscription and Android Auto isn’t available.


Mercedes-Benz C-Class 

Mercedes C-Class infotainment

The C-Class’s revised system includes an impressively high-definition 10.3in display and, in general, thoughtfully arranged menus. It’s less responsive than its rivals’, though, and the rotary controller with a writing pad (part of the £2275 Premium equipment line, which also brings online connectivity and an upgraded sat-nav) isn’t quite as user-friendly. Other upgrades include a 13-speaker Burmester stereo.