BMW e90 3 Series Faulty EGR Thermostats/Glow Plugs Resulting in Low MPG

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BMW e90 3 Series Faulty EGR Thermostats/Glow Plugs Resulting in Low MPG

BMW e90 3 Series Faulty EGR Thermostats/Glow Plugs Resulting in Low MPG

Does your BMW e90 3 series have a faulty EGR thermostat? Book an appointment online for BMW repairs in Jacksonville, FL. Best labor rates in town.

From 2006-2012, the BMW e90 3 series was the best-selling luxury vehicle in the United States and Canada. Many enthusiasts are particularly fond of the 320d model due to its efficient and peppy diesel engine. One of the common problems in the e90 diesel 3 series that results in significantly low miles-per-gallon (MPG) performance is a faulty EGR thermostat and glow plugs.

In the e90 3 series, the average coolant temperature is about 90 degrees Celsius or 195 degrees Fahrenheit. For city driving, this temperature results in an average of 35-45 MPG. When the EGR thermostat goes out, the BMW might read as low as 68 or 72 degrees Celsius. This results in lower MPG. In some cases, the e90 3 Series may report a very high MPG, but the actual MPG will be quite lower. In both cases, the cause of the problem is from the EGR thermostat or glow plugs malfunctioning. A certified, independent BMW specialist like Bavarian RennSport can diagnose the problem and fix it for you.

If you drive a BMW e90 320d, before the engine warms up, you might see a glow plug warning light come on for a brief period. If this problem is not addressed,  the glow plugs can end up snapping off. Glow plugs control the emissions of the engine, which includes your vehicle’s MPG and its environmental impact. The glow plugs can be replaced by any old mechanic, but because there are so many complexities in the BMW engine, it is best to contact a specialized BMW technician at Bavarian Rennsport to solve the problem.

Bavarian Rennsport is a local, independent BMW repair shop in Jacksonville, FL with BMW mechanics that have dealer-level expertise at a fraction of the expense. Book your diagnostic appointment online today!

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