Oil change4 min read·May 6, 2026
Symptoms of a clogged air filter
A drop in power and higher fuel consumption are common symptoms of a clogged air filter. Find out how to spot the problem and when to react.
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Symptoms of a clogged air filter
4 min readA clogged air filter restricts the airflow to the engine, which upsets the air-fuel mixture ratio. You’ll feel the effects in your wallet and in performance.
The most common symptoms
- Noticeably higher fuel consumption
- A drop in power and sluggish acceleration
- Rough engine running, especially at idle
- Black smoke from the exhaust in extreme cases
Why not wait?
Running the engine on too rich a mixture means not only higher fuel consumption, but also the risk of contaminating other components, e.g. the mass airflow sensor or the spark plugs.
Replacing the air filter is cheap and quick. We’ll do it during the oil change, at your address.
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