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2026-09-25 · 4 min read

What Is AdBlue? A Guide for Diesel European Car Owners

Mercedes, BMW, Audi and VW diesel owners: running out of AdBlue locks your engine at next start. Here's what it is, how often to top up, and where.

What Is AdBlue? A Guide for Diesel European Car Owners

如果你开的是 Mercedes E-Class、BMW 5 Series、Audi A6 或 VW Tiguan 等柴油版车型,仪表板上偶尔会出现「AdBlue」相关提示。很多车主不清楚这是什么,其实处理起来很简单,但不处理后果严重。

AdBlue 是什么

AdBlue 是一种由去离子水和尿素(32.5%)混合而成的液体,注入废气后处理系统(SCR),将柴油引擎排放的氮氧化物(NOx)分解为无害的氮气和水。这是欧六排放标准要求的技术。

用完了会怎样

仪表板会提前几百至一千多公里发出警告。用完后,下次重新启动引擎时系统会锁定引擎,无法发动。这不是故障,是设计如此——为了确保排放合规。

多久加一次、加多少

视车款和行驶里程,通常每 10,000–15,000 KM 需要补充一次,用量约 1.5–2 升。长途驾驶会消耗更快。一般随机油保养一起检查和补充最方便。

在哪里加

AdBlue 加注口通常在油箱盖旁边(蓝色盖子),或行李厢内。注意:绝对不能把 AdBlue 加进柴油箱,也不能把柴油加进 AdBlue 加注口,两者混淆需要昂贵的清洗维修。

买什么品牌

AdBlue 是标准化液体,有 ISO 22241 认证的产品都可以用,不一定要买原厂价格的。我们店有售,随保养一起补充即可,不用另外跑。

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