Graphical statistics of head gasket failures on the MGF. These graphs cannot be taken as accurate or representative, they are composed only of those failures reported by internet users at http://shame.4mg.com.
The raw data I use to calculate these graphs is at the bottom of the page. Note, many entries in the HOS are not complete, I have used all data available to make up the following graphs, any apparent inconsistencies are due to lack of data, ie: numbers of cars counted in age and milage differ because of missing data.
Failures per month, these do not include the few Australian and New Zealand cars in the list to try and show seasonal variations.
1998
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1999
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2000
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2001
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2002
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Combined
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Number of HGF per year of manufacture
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Mean milage at failure
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Mean age at failure
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Raw Data Below
Number of 1995 cars with one HGF - 11 Number of cars with two or more HGF - 1 Mean mileage to first HGF - 36,636 Mean milage to second HGF Mean age of car at failure - 24 months Total mileage to 1st HGF - 402,996 cars counted in age - 6 |
Number of 1996 cars with one HGF - 47 Number of cars with two or more HGF - 5 Mean mileage to first HGF - 37,921 Mean milage to second HGF - 51,850 Mean age of car at failure - 45.4 months Total mileage to 1st HGF - 1,782,303 cars counted in age - 35 |
Number of 1997 cars with one HGF - 67 Number of cars with two or more HGF - 5 Mean mileage to first HGF - 31,587 Mean milage to second HGF - 31,340 Mean age of car at failure - 36 months Total mileage to 1st HGF - 2,116,350 cars counted in age - 59 |
Number of 1998 cars with one HGF - 39 Number of cars with two or more HGF - 4 Mean mileage to first HGF - 32,030 Mean milage to second HGF - 53,500 Mean age of car at failure - 33.36 months Total mileage to 1st HGF - 1,204,150 cars counted in age - 36 |
Number of 1999 cars with one HGF - 4 Number of cars with two or more HGF - 0 Mean mileage to first HGF - 25,175 Mean milage to second HGF Mean age of car at failure - 29 months Total mileage to 1st HGF - 100,700 cars counted in age - 3 |
Number of 2000 cars with one HGF - 5 Number of cars with two or more HGF - 0 Mean mileage to first HGF - 22,360 Mean milage to second HGF - Mean age of car at failure - 14.75 months Total mileage to 1st HGF - 111,800 cars counted in age - 4 |
Number of 2001 cars with one HGF - 4 Number of cars with two or more HGF - 0 Mean mileage to first HGF - 15,960 Mean milage to second HGF Mean age of car at failure - 15 months Total mileage to 1st HGF - 63,843 cars counted in age - 4 |
Number of unknown year cars with one HGF - 28 Mean mileage to first HGF - 23,573 Mean age of car at failure - 24 months Total mileage to 1st HGF - 660,050 cars counted in age - 13 |
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Total Milage to 1st Failure - 6,445,192 Number with 1st failure - 205 Average - 31,440 Total age at 1st failure - 5607 |
Total Milage to 2nd Failure - 679950 Number with 2nd failure - 16 Average - 42497 Total age at 2nd failure - 451 |