2017 McLaren 675LT
2017 McLaren 675LT
Overview
The 2017 McLaren 675LT, a highly focused track-oriented supercar, is built with performance and precision engineering at its core. While generally lauded for its exhilarating driving dynamics and robust construction, like any high-performance vehicle, it can experience specific issues. This analysis focuses on documented technical reliability concerns beyond routine maintenance, providing insights into potential areas of attention for owners and enthusiasts. The 675LT utilizes a potent twin-turbocharged V8 engine and a sophisticated dual-clutch transmission, both engineered for extreme performance, which can sometimes present unique challenges.
Engine
3.8L Twin-Turbocharged V8
Turbocharger Wastegate Actuator Failure
- Symptoms: Reduced engine power, boost pressure warning lights, unusual noises from the turbo area.
- Solution: Replacement of the faulty wastegate actuator. In some cases, turbocharger unit replacement may be necessary.
- Cost: $1,500 - $3,000
Oil Cooler Leaks
- Symptoms: Visible oil leaks around the engine bay, low oil level warnings, potential for oil in coolant.
- Solution: Replacement of the leaking oil cooler and associated seals. Thorough cleaning of affected areas.
- Cost: $800 - $1,800
Transmission
7-Speed Dual-Clutch (SSG)
Clutch Actuator Malfunction
- Symptoms: Erratic gear changes, difficulty engaging gears, transmission warning lights, slipping clutches.
- Solution: Diagnosis and recalibration of the clutch actuator. Replacement of the actuator if faulty.
- Cost: $2,000 - $4,500
Mechatronic Unit Issues
- Symptoms: Transmission fault messages, incorrect gear selection, failure to shift.
- Solution: Software updates or replacement of the mechatronic control unit.
- Cost: $3,000 - $6,000
Suspension
Proactive Chassis Control II (PCC II)
Hydraulic Fluid Leaks
- Symptoms: Visible fluid leaks from suspension components, reduced suspension performance, warning lights related to suspension system.
- Solution: Inspection and replacement of leaking hydraulic lines, seals, or actuators. Refilling and bleeding the hydraulic system.
- Cost: $1,000 - $2,500
Electrical
Infotainment System
Screen Freezing/Unresponsiveness
- Symptoms: Infotainment screen becomes unresponsive, freezes, or restarts intermittently.
- Solution: Software updates for the infotainment system. In rare cases, replacement of the head unit.
- Cost: $500 - $1,500
Battery Drain
Parasitic Battery Drain
- Symptoms: Battery dies unexpectedly after short periods of inactivity, difficulty starting the vehicle.
- Solution: Diagnosis to identify the source of the parasitic drain (e.g., faulty module, aftermarket accessory). Repair or replacement of the faulty component.
- Cost: $300 - $1,000
Exterior
Body Panels
No widespread issues reported.
- Symptoms: N/A
- Solution: N/A
- Cost: Varies
Aerodynamic Components
No widespread issues reported.
- Symptoms: N/A
- Solution: N/A
- Cost: Varies
Interior
Trim and Upholstery
No widespread issues reported.
- Symptoms: N/A
- Solution: N/A
- Cost: Varies
Climate Control System
No widespread issues reported.
- Symptoms: N/A
- Solution: N/A
- Cost: Varies
Summary Verdict
The 2017 McLaren 675LT is a highly specialized supercar with a strong emphasis on performance. While generally well-engineered, owners may encounter specific issues related to its advanced powertrain and suspension systems. Common concerns include potential failures in the turbocharger wastegate actuators and oil cooler leaks for the engine, and clutch actuator or mechatronic unit problems for the dual-clutch transmission. The sophisticated suspension system can also experience hydraulic leaks. Electrical gremlins, such as infotainment screen issues and parasitic battery drain, are also noted. Exterior and interior components, barring typical wear, are generally robust. Regular specialized maintenance and prompt attention to warning signs are crucial for maintaining the 675LT’s peak performance and reliability.