Government procurement case of Ford Transit V362 service vehicles in Shenyang: 3-year failure rate analysis and winter operation assurance. In the frigid northeastern region, the selection of municipal sanitation service vehicles directly impacts winter operational efficiency and personnel safety. A district urban management bureau in Shenyang procured five Ford Transit V362 service vehicles in 2021 for daily inspections, emergency repairs, and material transportation. After nearly three years of actual operation, this batch accumulated approximately 180,000 km in mileage, covering extreme low temperatures down to -30°C, icy/snowy road conditions, and frequent stop-and-go urban driving cycles. Based on the maintenance records of these vehicles, this article provides an objective analysis across three dimensions—failure type distribution, after-sales response speed, and spare parts supply assurance—to serve as a reference for similar procurement decisions. I. Three-Year Maintenance Records and Failure Type Distribution According to the maintenance and service log (November 2021–October 2024) maintained by the urban management bureau in Shenyang, the five Ford Transit V362 service vehicles generated a total of 87 repair work orders. Of these, failures directly attributable to winter low temperatures accounted for 42% of all failures. The specific distribution is as follows: Table 1: Three-Year Failure Type Distribution of Ford Transit V362 Service Vehicles (5 units) from a District Urban Management Bureau in Shenyang Failure Category | Specific Failure Item | Occurrence Count | % of Total Failures | Primary Cause ---|---|---|---|--- Winter Low-Temperature Related | Engine cold-start difficulty (requiring multiple preheating cycles) | 15 | 17.2% | Diesel fuel’s reduced low-temperature fluidity below -30°C; factory-installed preheating system designed primarily for southern operating conditions | Hydraulic system sluggishness/abnormal noise | 12 | 13.8% | Excessively high hydraulic oil viscosity at low temperatures; hardening of hose seals causing leakage | Battery discharge/failure to start | 9 | 10.3% | Reduced battery capacity under low temperatures; vehicle parked for over 48 hours Electrical System | Sensor false alarms (temperature/pressure) | 18 | 20.7% | Condensation at wiring harness connectors due to thermal cycling, leading to poor contact | Headlight/windshield wiper motor burnout | 6 | 6.9% | Continuous load under snow/ice accumulation causing motor overheating Chassis & Drivetrain | Heavy clutch pedal/incomplete clutch disengagement | 8 | 9.2% | Snow/ice ingress into clutch cable housing, freezing and increasing resistance | Abnormal tire wear (front-wheel bias wear) | 5 | 5.7% | Mixed use of winter tires and all-season tires; misaligned wheel alignment parameters Upper-Body Equipment | Hydraulic tailgate support strut failure | 7 | 8.0% | Hardening of low-temperature seals, resulting in loss of air-tightness | Mobile onboard lighting fixture failure | 7 | 8.0% | Internal lens fogging followed by short-circuiting Total | — | 87 | 100% | — As shown in the data, winter low-temperature-induced starting and hydraulic system issues ranked highest, collectively accounting for 41.3% of all failures—closely aligned with Shenyang’s annual four-month period (December through March) of sustained sub-zero temperatures. Notably, prior to the second winter season, the bureau adopted Chengli Special Purpose Vehicle’s dedicated winter maintenance program—including replacement with low-temperature hydraulic oil, installation of auxiliary preheaters, and upgrading to higher-capacity batteries—which reduced cold-start failures during the third winter by approximately 60% compared to the first winter. II. Chengli After-Sales Response Speed and Spare Parts Supply Assurance The chassis of these Ford Transit V362 service vehicles were supplied by Ford