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What are the reasons for high fuel consumption in e90?

2 Answers

StCameron

08/26/25 3:12am

It may be caused by excessive carbon deposits in the car engine or oxygen sensor failure. Below are specific explanations for BMW: 1. Background: BMW cars refer to vehicles produced by Bayerische Motoren Werke AG (abbreviated as BMW). The main series models include 1, 2, 3, 4, 5, 6, 7, 8, etc. BMW is renowned worldwide for producing luxury cars, motorcycles, and high-performance engines. 2. Logo meaning: The BMW logo features a double-circle graphic with the word 'BMW' above the double circles. The entire emblem resembles the blue sky, white clouds, and a continuously rotating propeller, symbolizing BMW's long history and its consistent purpose and goal: to meet customers' greatest desires with the latest technology and most advanced concepts in the vast expanse of time and space, reflecting the company's vigorous spirit and ever-changing new style, and indicating the superior quality, leading technology, and global presence of BMW cars.

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Boromir

09/08/25 3:33am

I've driven the E90 for many years, and there are quite a few common reasons for high fuel consumption. From a technical perspective, issues in the engine such as a faulty air flow meter can send incorrect data, leading to excessive fuel injection; worn-out spark plugs with low ignition efficiency also require more fuel; problems with the oxygen sensor can cause an imbalance in the air-fuel mixture, increasing fuel consumption. In terms of the drivetrain, transmission issues or clutch wear can affect power delivery. Insufficient tire pressure increases rolling resistance, and stuck brake calipers also consume more fuel. Additionally, a dirty fuel system or carbon buildup can lead to inaccurate fuel injection. It's recommended to use a diagnostic tool to check for error codes and not overlook small components. Regular inspections and scheduled maintenance can prevent many issues, naturally reducing fuel consumption.

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