How many personal vehicles are on the road? How many new vehicles added each year?
After looking through all of our resources, we have found that while most of the information you've requested does exist, it exists behind a paywall that we cannot get past. We were able to find some information for free, but some, especially regarding China, is not publicly available. In order to establish a trend, we analyzed data from the last five years to be as current as possible, and we utilized data from registered passenger vehicles, as these should encompass all personal vehicles on the road. The United States saw an upswing in registered passenger cars from 2013 to 2014, but in the years since, it has seen an exponential downturn. Between 2016 and 2017, there was a decrease of 56 million registered personal vehicles in the United States. Globally and in Europe, however, the trend continued to be positive in 2015. We were unable to find any information regarding the years 2016 and 2017. No public information was available for China. In order to organize the information, we created a spreadsheet for your convenience.
We utilized various databases to search for information regarding the use of personal vehicles in different regions. It quickly became apparent, however, that most of this information was locked behind paywalls. We were, however, able to locate some information for free.
We found one source that gave quarterly breakdowns of personal vehicle registrations in the United States from 2008 to 2018. By adding the quarterly numbers (rounded to the nearest millionth), we were able to calculate the figures for the United States.
TOTAL REGISTERED PASSENGER CARS (mil)
YEAR: Q1 (mil) + Q2 (mil) + Q3 (mil) + Q4 (mil) = TOTAL
(For Rate of Change Calculation) 2012: 131 + 125 + 126 + 132 = 514
2013: 137 + 132 + 135 + 134 = 538
2014: 132 + 139 + 139 + 138 = 548
2015: 133 + 135 + 135 + 131 = 534
2016: 126 + 121 + 121 + 120 = 488
2017: 110 + 107 + 108 + 107 = 432
We were able to find yearly numbers for Europe and worldwide, but only through 2015. This meant we only had to calculate the change between years
CHANGE IN PASSENGER CAR REGISTRATIONS (mil)
YEAR1 - YEAR2: YEAR2 TOTAL - YEAR1 TOTAL = RATE OF CHANGE
2012 - 2013: 538 - 524 = +24
2013 - 2014: 548 - 538 = +10
2014 - 2015: 534 - 548 = -14
2015 - 2016: 488 - 534 = -46
2016 - 2017: 432 - 488 = -56
2012 - 2013: 208 - 203 = +5
2013 - 2014: 317 - 208 = +9
2014 - 2015: 324 - 317 = +7
2012 - 2013: 869 - 835 = +34
2013 - 2014: 907 - 869 = +38
2014 - 2015: 947 - 907 = +40
We found several sources that you may find useful should you wish to pay for them. There are a number of detailed reports available for the requested statistics.
NIELSEN DOSSIER: Highly detailed report on car drivers in the United States, released 2017
STATISTA PASSENGER CARS REPORT: Most importantly, this one seems as though it may have information on passenger cars in China.
VEHICLE MARKET ANALYSIS: Comprehensive report that includes vehicles-in-use numbers and regional mapping.
CHINA PASSENGER CAR SALES: The most up-to-date information regard passenger car SALES. If the other sources fail you, it may be worth referencing this to get an idea of China's current market for vehicles-in-use.
Information outside of the United States was hard to come by for free, but we were able to compile information regarding the past five years for the U.S. and 2015 and before for Europe and the world. The full numbers and rates of change have been provided on a spreadsheet for you convenience. While there is a huge gap in information for China, we believe this information can be found through one of the sources provided above.