A poll was conducted of more than 50 000 buyers of new cars

Last updated: 2/14/2023

A poll was conducted of more than 50 000 buyers of new cars 90 days after the cars were purchased The data on problems per 100 vehicles for cars made by Toyota and General Motors GM are given in the time plot below for the years 1998 2004 The solid line is for GM and the dashed line is for Toyota Problems per 100 whicles 190 180 170 160 150 140 130 Tim Deries Plot of Problems per 100 Vehicles for GM and Tet 120 110 000 100 1990 1000 Year 2002 In 2002 the number of problems per 100 vehicles was about 20 higher for GM than for Toyota about twice as high for Toyota than for GM about twice as high for GM as for Toyota 2004 VIO OM Trys