david_lorenz6
Skoda Octavia Hybrid Fuel Consumption Problem
Summary of the thread
A Skoda Octavia Hybrid from 2021 experienced increased fuel consumption, a persistent check engine light, and a loud hissing sound during acceleration. The suspected cause was an air intake leak, possibly due to a cracked intake hose. A workshop confirmed the issue, replaced the hose, and resolved the problem, improving the vehicle's performance.
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4 comment(s)
david_lorenz6 (community.author)
Where exactly is the vacuum hose you're referring to? Is it easy to spot? And would that also cause the check engine light to illuminate?
oskardragon44
Yes, that hose. It's a small diameter vacuum hose connected to the intake manifold, often gets brittle. A leak there can cause engine misfires and trigger the check engine light. I'd suggest getting it properly smoke tested at a workshop.
david_lorenz6 (community.author)
Thank you for the insight. I took it to a workshop, and they confirmed it was a cracked intake hose. New hose fitted, cost around 100€. Running much better now!
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SKODA
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OCTAVIA
oskardragon44
Hissing on acceleration and high fuel consumption sounds like a vacuum leak. I had similar symptoms on my Octavia, check the vacuum hose near the throttle body.