Speedometer error
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There have been lots of reports of MkV GTI (and GLIs?) speedometer reading higher than actual speed. VW initially had an official statement [vwvortex] on this issue, but has since released a TSB on how to fix this issue. See below for link on how to use VAG-COM to make this fix [vwvortex].
- Speedometer error at various speeds:
| Indicated | Actual | MPH diff | % diff |
|---|---|---|---|
| 30 | 29 | 1 | 3.4 |
| 40 | 38 | 2 | 5.3 |
| 50 | 47 | 3 | 6.4 |
| 60 | 56 | 4 | 7.1 |
| 65 | 60 | 5 | 8.3 |
| 70 | 65 | 5 | 7.7 |
| 75 | 70 | 5 | 7.1 |
| 80 | 73 | 7 | 9.6 |
| 85 | 78 | 7 | 8.9 |
| 90 | 82 | 8 | 9.6 |
| 95 | 87 | 8 | 9.2 |
| 100 | 91 | 9 | 9.9 |
- VW TSB on fixing speedometer error: "RVU - Instrument Cluster, Update Speedometer Coding (OR)", TSB 00-06-10
- VAG-COM: How to change the "Distance Impulse Number" to (reputedly) affect the speedometer correction factor [vwvortex], and a pic of the VAG-COM screen where you do that:
- Related [vwvortex] threads:
