寶馬汽車在長期使用過程中，一些故障較為常見。發動機漏油是寶馬車主常遇到的問題之一，多發生在氣門室蓋墊、油底殼墊等部位。這主要是由于橡膠密封件長期受高溫、機油侵蝕，逐漸老化失去彈性所致。維修時，需更換相應密封墊，并對周邊部件進行清潔，防止油污殘留影響后續檢查。

During the long-term use of BMW cars, some malfunctions are quite common. Engine oil leakage is one of the common problems encountered by BMW owners, often occurring in valve cover gaskets, oil pan gaskets, and other areas. This is mainly due to the long-term exposure of rubber seals to high temperatures and oil erosion, gradually aging and losing elasticity. During maintenance, it is necessary to replace the corresponding sealing gasket and clean the surrounding components to prevent oil residue from affecting subsequent inspections.

另一個常見故障是冷卻系統故障，表現為冷卻液泄漏、水溫過高。寶馬冷卻系統采用塑料材質的水箱和水管，隨著車輛使用年限增加，塑料部件易老化、破裂。當發現冷卻液液位下降較快或水溫表指針異常升高時，應及時檢查冷卻系統各部件。若為水箱破裂，需更換水箱；若是水管接頭松動或水管破裂，可通過緊固接頭或更換水管解決。同時，要注意定期更換冷卻液，避免因冷卻液變質影響散熱效果。

Another common malfunction is cooling system failure, manifested as coolant leakage and high water temperature. The BMW cooling system uses plastic water tanks and pipes, and as the vehicle's service life increases, plastic components are prone to aging and cracking. When the coolant level drops rapidly or the water temperature gauge pointer rises abnormally, all components of the cooling system should be checked in a timely manner. If the water tank ruptures, it needs to be replaced; If the water pipe joint is loose or the water pipe is broken, it can be solved by tightening the joint or replacing the water pipe. At the same time, it is important to regularly replace the coolant to avoid affecting the heat dissipation effect due to coolant deterioration.

此外，寶馬的電子系統故障也較為頻繁，如車輛無法啟動、儀表盤故障燈亮起等。這可能是電池虧電、保險絲熔斷或控制模塊故障。維修人員需借助專業診斷儀讀取故障碼，確定故障根源，進行針對性維修，如更換電池、保險絲或修復控制模塊等。

In addition, BMW's electronic system malfunctions are also quite frequent, such as the vehicle being unable to start and the dashboard malfunction light coming on. This may be due to battery depletion, blown fuse, or control module malfunction. Maintenance personnel need to use professional diagnostic instruments to read fault codes, determine the root cause of the fault, and carry out targeted repairs, such as replacing batteries, fuses, or repairing control modules.