2013 BMW 135is
2013 BMW 135is
Overview
The 2013 BMW 135is, a performance-oriented variant of the 1 Series coupe, is generally regarded as a reliable vehicle, especially considering its sporty nature. It was offered with a potent turbocharged inline-six engine and a choice of manual or automatic transmissions, both of which are known for their robustness. While it shares some components with other BMW models of its era, the 135is benefits from specific tuning and a focus on driving dynamics. Owners generally report satisfaction with its performance and build quality, though like any performance car, maintenance and potential repairs can be more involved and costly than a standard commuter vehicle. This analysis focuses on common reported issues beyond routine maintenance.
Engine
3.0L Twin-Turbocharged Inline-6 (N55)
Water Pump Failure
- Symptoms: Overheating, coolant leaks, warning lights on the dashboard.
- Solution: Replacement of the electric water pump and thermostat.
- Cost: $700 - $1200
Turbocharger Issues
- Symptoms: Loss of power, whistling noises, boost leaks, check engine light.
- Solution: Repair or replacement of the turbocharger assembly and associated lines.
- Cost: $1500 - $3000
PCV Valve Failure
- Symptoms: Rough idle, oil leaks, blue smoke from exhaust, increased oil consumption.
- Solution: Replacement of the Positive Crankcase Ventilation (PCV) valve system.
- Cost: $300 - $600
Transmission
6-Speed Manual (ZF GS6-37BZ)
No Major Issues
- Symptoms: No widespread issues reported.
- Solution: No widespread issues reported.
- Cost: No widespread issues reported.
7-Speed M-DCT Automatic (Drivelogic)
Mechatronics Unit Failure
- Symptoms: Harsh shifting, transmission warning lights, inability to select gears.
- Solution: Repair or replacement of the mechatronics unit.
- Cost: $2000 - $4000
Clutch Pack Wear
- Symptoms: Slipping gears, rough engagement, delayed shifts.
- Solution: Replacement of clutch packs.
- Cost: $1800 - $3500
Suspension
Standard Chassis
No Major Issues
- Symptoms: No widespread issues reported.
- Solution: No widespread issues reported.
- Cost: No widespread issues reported.
Electrical
Standard Electrical System
iDrive System Glitches
- Symptoms: Screen freezing, unresponsiveness, audio issues.
- Solution: Software updates or module reset. In some cases, head unit replacement.
- Cost: $200 - $1500
Window Regulator Failure
- Symptoms: Power windows not operating, slow movement, grinding noises.
- Solution: Replacement of the window regulator and motor assembly.
- Cost: $300 - $500
Exterior
Standard Exterior
No Major Issues
- Symptoms: No widespread issues reported.
- Solution: No widespread issues reported.
- Cost: No widespread issues reported.
Interior
Standard Interior
No Major Issues
- Symptoms: No widespread issues reported.
- Solution: No widespread issues reported.
- Cost: No widespread issues reported.
Summary Verdict
The 2013 BMW 135is offers a compelling blend of performance and driving pleasure. Its core mechanical components, particularly the N55 engine and the manual transmission, are generally robust. However, potential owners should be aware of common issues such as electric water pump failures and turbocharger problems, which can be costly to repair. The M-DCT automatic transmission, while offering rapid shifts, has a higher propensity for mechatronics and clutch pack issues. Electrical gremlins like iDrive glitches and window regulator failures are also noted. Despite these potential drawbacks, with diligent maintenance and addressing issues promptly, the 135is can remain a reliable and enjoyable performance coupe.