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BMW Z3 vs. Audi A4 / S4 / RS4 Lemon Odds and Nada Odds

BMW Z3 vs. Audi A4 / S4 / RS4: Lemon Odds and Nada Odds:
BMW Z3 vs. Audi A4 / S4 / RS4: Lemon Odds and Nada Odds:

Other sources of BMW Z3 and Audi A4 / S4 / RS4 reliability data provide only averages, which can conceal as much as they reveal. So we also report the percentage of BMW Z3s and Audi A4 / S4 / RS4s with no repairs at all in the past year and the percentage of BMW Z3s and Audi A4 / S4 / RS4s that are lemons (required three or more repair trips in the past year). These figures might surprise you.

These stats are promptly updated four times a year, to closely track BMW Z3 and Audi A4 / S4 / RS4 lemon odds as the cars age. Others can be over a year behind. Only TrueDelta tells you how reliable the BMW Z3 and Audi A4 / S4 / RS4 have been recently.

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BMW Z3

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Audi A4 / S4 / RS4

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BMW Z3 Lemon Odds and Nada Odds through December 31, 2012

General NotesNote the sample sizes in the right column. For a precise Nada Odds, it'd be best to have 50+ cars. For Lemon Odds, 100+. In most cases the sample sizes are between 25 and 35, and differences of less than six points are probably not meaningful. This is especially a factor with the "Lemon Odds," where nearly all scores are low.

That said, the Lemon Odds figures are probably much lower than many people suspected, so we've posted them. Similarly, the Nada Odds are probably higher than many people suspected. Even with the least reliable cars in this results set your odds of no repairs would be better than one in three. Surprised? MethodologyThe samples include cars for which we have at least nine months of data in the past year. The "Nada-odds" are adjusted based on the average number of months of data per car. These stats are very close to what they'd be if we included only cars with a full year of data.

Only successfully completed repairs are currently included in the analysis. Recalls and problems fixed with just a reflash or warning light reset are not included.
Year Make/Model Nada Odds per 100 Cars Lemon Odds per 100 Cars
65 vehicles, 11.6 months per vehicle, 83700 miles driven2006 Audi A4 44 11
26 vehicles, 11.4 months per vehicle, 138700 miles driven2002 Audi A4 Join or sign in to view
31 vehicles, 11.6 months per vehicle, 52100 miles driven2008 Audi A4 Join or sign in to view
37 vehicles, 11.8 months per vehicle, 32900 miles driven2010 Audi S4 81 5
43 vehicles, 11.4 months per vehicle, 62100 miles driven2007 Audi A4 61 < 1
54 vehicles, 11.5 months per vehicle, 43400 miles driven2009 Audi A4 56 < 1
50 vehicles, 11.4 months per vehicle, 35200 miles driven2010 Audi A4 62 < 1
27 vehicles, 11.7 months per vehicle, 21900 miles driven2011 Audi S4 Join or sign in to view
48 vehicles, 11.8 months per vehicle, 23600 miles driven2011 Audi A4 85 < 1

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