Mechatronic sleeve and pan gasket leak
Attaches to ZF6HP at gearbox level · Transmission · carried by 95 variants across 8 chassis
Overview
Mechatronic sleeve and pan gasket leak is a common fault recorded against ZF6HP at gearbox level, typically from 120–220k km. It shows up as fluid on the bellhousing or the exhaust, gearbox fault warnings, erratic shifting once the level drops. Where it's documented, the repair runs €250–€600 (sleeve and pan at an independent, done with a fluid service, costs dated 2026-07), and it can be checked before you buy. 95 variants across 8 chassis in this database inherit it.
What happens
Symptom. Fluid on the bellhousing or the exhaust, gearbox fault warnings, erratic shifting once the level drops.
Cause. The plastic adapter sleeve carrying the wiring through the case hardens and leaks; the integrated pan gasket does the same.
How to check it
Static checks
On the lift, look at the gearbox pan and the bellhousing seam for wet ATF, it's red-brown and unmistakable.
Engine off, ideally on a lift.
Every variant that carries this
| Variant | Chassis | Body | Years | Risk | Good buy | Cost as % of good buy |
|---|---|---|---|---|---|---|
| 318i N46 | E90 | sedan | 2005–2011 | R3 | €3,100 | 14% |
| 318i N46 | E91 | wagon | 2005–2011 | R3 | €3,300 | 13% |
| 320i N46 | E90 | sedan | 2005–2007 | R3 | €3,400 | 13% |
| 320i N46 | E91 | wagon | 2005–2007 | R3 | €3,600 | 12% |
| 320i N43 | E90 | sedan | 2007–2011 | R4 | €3,950 | 11% |
| 320i N43 | E91 | wagon | 2007–2011 | R4 | €4,200 | 10% |
| 320i N43 | E92 | coupe | 2007–2011 | R4 | €4,550 | 9% |
| 320i N43 | E93 | convertible | 2007–2011 | R4 | €4,450 | 10% |
| 323i N52 | E90 | sedan | 2005–2007 | R2 | €4,050 | 10% |
| 323i N52 | E91 | wagon | 2005–2007 | R2 | €4,300 | 10% |
| 323i N52 | E92 | coupe | 2006–2007 | R2 | €4,650 | 9% |
| 325i N52 | E90 | sedan | 2005–2007 | R2 | €4,750 | 9% |
| 325i N52 | E91 | wagon | 2005–2007 | R2 | €5,050 | 8% |
| 325i N52 | E92 | coupe | 2006–2007 | R2 | €5,450 | 8% |
| 325i N52 | E93 | convertible | 2007 | R2 | €5,350 | 8% |
| 325i N53 | E90 | sedan | 2007–2011 | R4 | €5,250 | 8% |
| 325i N53 | E91 | wagon | 2007–2012 | R4 | €5,550 | 8% |
| 325i N53 | E92 | coupe | 2007–2013 | R4 | €6,050 | 7% |
| 325i N53 | E93 | convertible | 2007–2013 | R4 | €5,900 | 7% |
| 328i N52 | E90 | sedan | 2006–2011 | R2 | €5,150 | 8% |
| 328i N52 | E91 | wagon | 2006–2012 | R2 | €5,450 | 8% |
| 328i N52 | E92 | coupe | 2006–2013 | R2 | €5,950 | 7% |
| 328i N52 | E93 | convertible | 2007–2013 | R2 | €5,750 | 7% |
| 330i N52 | E90 | sedan | 2005–2007 | R2 | €5,600 | 8% |
| 330i N52 | E91 | wagon | 2005–2007 | R2 | €5,950 | 7% |
| 330i N52 | E92 | coupe | 2006–2007 | R2 | €6,450 | 7% |
| 330i N53 | E90 | sedan | 2007–2011 | R4 | €6,000 | 7% |
| 330i N53 | E91 | wagon | 2007–2011 | R4 | €6,350 | 7% |
| 330i N53 | E92 | coupe | 2007–2011 | R4 | €6,900 | 6% |
| 330i N53 | E93 | convertible | 2007–2011 | R4 | €6,750 | 6% |
| 335i N54 | E90 | sedan | 2006–2010 | R4 | €7,350 | 6% |
| 335i N54 | E92 | coupe | 2006–2010 | R4 | €8,450 | 5% |
| 335i N54 | E93 | convertible | 2007–2010 | R4 | €8,250 | 5% |
| 335i N55 | E90 | sedan | 2010–2011 | R3 | €11,700 | 4% |
| 335i N55 | E92 | coupe | 2010–2013 | R3 | €13,450 | 3% |
| 335i N55 | E93 | convertible | 2010–2013 | R3 | €13,100 | 3% |
| 318d N47 | E90 | sedan | 2007–2011 | R5 | €4,100 | 10% |
| 318d N47 | E91 | wagon | 2007–2011 | R5 | €4,350 | 10% |
| 320d M47 | E90 | sedan | 2005–2007 | R3 | €3,800 | 11% |
| 320d M47 | E91 | wagon | 2005–2007 | R3 | €4,050 | 10% |
| 320d N47 | E90 | sedan | 2007–2011 | R5 | €4,400 | 10% |
| 320d N47 | E91 | wagon | 2007–2012 | R5 | €4,650 | 9% |
| 320d N47 | E92 | coupe | 2007–2013 | R5 | €5,050 | 8% |
| 320d N47 | E93 | convertible | 2007–2013 | R5 | €4,950 | 9% |
| 325d M57 | E90 | sedan | 2006–2010 | R2 | €5,200 | 8% |
| 325d M57 | E91 | wagon | 2006–2010 | R2 | €5,500 | 8% |
| 325d M57 | E92 | coupe | 2006–2010 | R2 | €6,000 | 7% |
| 325d N57 | E90 | sedan | 2010–2011 | R3 | €7,200 | 6% |
| 325d N57 | E91 | wagon | 2010–2012 | R3 | €7,650 | 6% |
| 325d N57 | E92 | coupe | 2010–2013 | R3 | €8,300 | 5% |
| 330d M57 | E90 | sedan | 2005–2008 | R2 | €5,950 | 7% |
| 330d M57 | E91 | wagon | 2005–2008 | R2 | €6,300 | 7% |
| 330d M57 | E92 | coupe | 2006–2008 | R2 | €6,850 | 6% |
| 330d M57 | E93 | convertible | 2007–2008 | R2 | €6,700 | 6% |
| 330d N57 | E90 | sedan | 2008–2011 | R3 | €8,500 | 5% |
| 330d N57 | E91 | wagon | 2008–2012 | R3 | €9,050 | 5% |
| 330d N57 | E92 | coupe | 2008–2013 | R3 | €9,000 | 5% |
| 330d N57 | E93 | convertible | 2008–2013 | R3 | €8,750 | 5% |
| 335d M57 | E90 | sedan | 2006–2010 | R3 | €6,900 | 6% |
| 335d M57 | E92 | coupe | 2006–2010 | R3 | €7,950 | 5% |
| 116i N45B16 | E87 | hatchback | 2004–2007 | R2 | €2,700 | 16% |
| 116i N43B16 | E87 | hatchback | 2007–2011 | R3 | €3,500 | 12% |
| 116i N43B16 | E81 | hatchback | 2007–2011 | R3 | €3,100 | 14% |
| 118i N46 | E87 | hatchback | 2004–2007 | R2 | €2,900 | 15% |
| 118i N43 | E87 | hatchback | 2007–2011 | R3 | €3,900 | 11% |
| 118i N43 | E81 | hatchback | 2007–2011 | R3 | €3,450 | 12% |
| 118i N43 | E82 | coupe | 2007–2011 | R3 | €4,000 | 11% |
| 118i N43 | E88 | convertible | 2008–2011 | R3 | €4,200 | 10% |
| 120i N46 | E87 | hatchback | 2004–2007 | R2 | €3,250 | 13% |
| 120i N43 | E87 | hatchback | 2007–2011 | R3 | €4,250 | 10% |
| 120i N43 | E81 | hatchback | 2007–2011 | R3 | €3,800 | 11% |
| 120i N43 | E82 | coupe | 2007–2011 | R3 | €4,400 | 10% |
| 120i N43 | E88 | convertible | 2008–2011 | R3 | €4,650 | 9% |
| 125i N52 | E82 | coupe | 2008–2013 | R2 | €7,000 | 6% |
| 125i N52 | E88 | convertible | 2008–2013 | R2 | €7,400 | 6% |
| 130i N52 | E87 | hatchback | 2005–2011 | R2 | €7,000 | 6% |
| 130i N52 | E81 | hatchback | 2007–2011 | R2 | €6,800 | 6% |
| 135i N54 | E82 | coupe | 2007–2010 | R4 | €9,800 | 4% |
| 135i N54 | E88 | convertible | 2008–2010 | R4 | €10,350 | 4% |
| 116d N47 | E87 | hatchback | 2009–2011 | R4 | €4,050 | 10% |
| 116d N47 | E81 | hatchback | 2009–2011 | R4 | €3,600 | 12% |
| 118d M47 | E87 | hatchback | 2004–2007 | R2 | €3,200 | 13% |
| 118d N47 | E87 | hatchback | 2007–2011 | R4 | €4,600 | 9% |
| 118d N47 | E81 | hatchback | 2007–2012 | R4 | €4,100 | 10% |
| 118d N47 | E82 | coupe | 2007–2013 | R4 | €4,700 | 9% |
| 118d N47 | E88 | convertible | 2008–2013 | R4 | €4,950 | 9% |
| 120d M47 | E87 | hatchback | 2004–2007 | R2 | €3,550 | 12% |
| 120d N47 | E87 | hatchback | 2007–2011 | R4 | €5,150 | 8% |
| 120d N47 | E81 | hatchback | 2007–2012 | R4 | €4,600 | 9% |
| 120d N47 | E82 | coupe | 2007–2013 | R4 | €5,250 | 8% |
| 120d N47 | E88 | convertible | 2008–2013 | R4 | €5,550 | 8% |
| 123d N47S | E87 | hatchback | 2007–2011 | R4 | €6,450 | 7% |
| 123d N47S | E81 | hatchback | 2007–2012 | R4 | €5,750 | 7% |
| 123d N47S | E82 | coupe | 2007–2013 | R4 | €6,650 | 6% |
| 123d N47S | E88 | convertible | 2008–2013 | R4 | €6,950 | 6% |
The last column is the point. The same repair is an inconvenience on one variant and a reason to scrap the car on another. A failure costing a quarter of the vehicle's value changes the purchase decision regardless of how rare it is.