OVERVIEW
In 1952, ad manager and investor Bill Quinn traded his invested shares in Road & Track for the Hop Up title, and he left with staff to form Quinn Publishing Company in Los Angeles, Calif.

Although Quinn's Hop Up title was successful, he really wanted to compete with Motor Trend. So in June, 1953 Hop Up was co-titled as Hop Up and Motor Life. Content began shifting to new cars, and the March, 1954 issue was the last one with this co-titling.  Hop Up was then folded into Rod & Custom, and Motor Life continued as a standalone title.

Quinn Publishing then sold Motor Life to Petersen Publishing in 1955, and Petersen continued the publication until November, 1961.  It was then merged into Sports Car Graphic, another Petersen title, in the December, 1961 issue.

The magazine featured Detroit iron, Detroit concept cars, some racing coverage, and the occasional hot rod and custom cover.

PUBLICATION DATA
Motor Life was consistently in #3, #4 or #5 position in print volumes among automotive titles that provided paid circulation details.   Data are available for the years from 1955 through 1961. Net monthly paid circulation peaked in 1958 with almost 37,000 copies, then settled at around 29,000 per month until it ceased production in 1961.

Apr 1954
Apr 1954 Vol 3 No 9
May 1954
May 1954 Vol 3 No 10
June 1954
June 1954 Vol 3 No 11
Jul 1954
Jul 1954 Vol 3 No 12
Aug 1954
Aug 1954 Vol 4 No 1
Sep 1954
Sep 1954 Vol 4 No 2
Oct 1954
Oct 1954 Vol 4 No 3
Nov 1954
Nov 1954 Vol 4 No 4
Dec 1954
Dec 1954 Vol 4 No 5
Jan 1955
Jan 1955 Vol 4 No 6
Feb 1955
Feb 1955 Vol 4 No 7
Mar 1955
Mar 1955 Vol 4 No 8
Apr 1955
Apr 1955 Vol 4 No 9
May 1955
May 1955 Vol 4 No 10
Jun 1955
Jun 1955 Vol 4 No 11
Jul 1955
Jul 1955 Vol 4 No 12
Aug 1955
Aug 1955 Vol 5 No 1
Sep 1955
Sep 1955 Vol 5 No 2
Oct 1955
Oct 1955 Vol 5 No 3
Nov 1955
Nov 1955 Vol 5 No 4
Dec 1955
Dec 1955 Vol 5 No 5
Jan 1956
Jan 1956 Vol 5 No 6
Feb 1956
Feb 1956 Vol 5 No 7
Mar 1956
Mar 1956 Vol 5 No 8
Apr 1956
Apr 1956 Vol 5 No 9
May 1956
May 1956 Vol 5 No 10
Jun 1956
Jun 1956 Vol 5 No 11
Jul 1956
Jul 1956 Vol 5 No 12
Aug 1956
Aug 1956 Vol 6 No 1
Sep 1956
Sep 1956 Vol 6 No 2
Oct 1956
Oct 1956 Vol 6 No 3
Nov 1956
Nov 1956 Vol 6 No 4
Dec 1956
Dec 1956 Vol 6 No 5
Jan 1957
Jan 1957 Vol 6 No 6
Feb 1957
Feb 1957 Vol 6 No 7
Mar 1957
Mar 1957 Vol 6 No 8
Apr 1957
Apr 1957 Vol 6 No 9
May 1957
May 1957 Vol 6 No 10
Jun 1957
Jun 1957 Vol 6 No 11
Jul 1957
Jul 1957 Vol 6 No 12
Aug 1957
Aug 1957 Vol 7 No 1
Sep 1957
Sep 1957 Vol 7 No 2
Oct 1957
Oct 1957 Vol 7 No 3
Nov 1957
Nov 1957 Vol 7 No 4
Dec 1957
Dec 1957 Vol 7 No 5
Jan 1958
Jan 1958 Vol 7 No 6
Feb 1958
Feb 1958 Vol 7 No 7
Mar 1958
Mar 1958 Vol 7 No 8
Apr 1958
Apr 1958 Vol 7 No 9
May 1958
May 1958 Vol 7 No 10
Jun 1958
Jun 1958 Vol 7 No 11
Jul 1958
Jul 1958 Vol 7 No 12
Aug 1958
Aug 1958 Vol 7 No 1
Sep 1958
Sep 1958 Vol 8 No 2
Oct 1958
Oct 1958 Vol 8 No 3
Nov 1958
Nov 1958 Vol 8 No 4
Dec 1958
Dec 1958 Vol 8 No 5
Jan 1959
Jan 1959 Vol 8 No 6
Feb 1959
Feb 1959 Vol 8 No 7
Mar 1959
Mar 1959 Vol 8 No 8
Apr 1959
Apr 1959 Vol 8 No 9
May 1959
May 1959 Vol 8 No 10
Jun 1959
Jun 1959 Vol 8 No 11
Jul 1959
Jul 1959 Vol 8 No 12
Aug 1959
Aug 1959 Vol 9 No 1
Sep 1959
Sep 1959 Vol 9 No 2
Oct 1959
Oct 1959 Vol 9 No 3
Nov 1959
Nov 1959 Vol 9 No 4
Dec 1959
Dec 1959 Vol 9 No 5
Jan 1960
Jan 1960 Vol 9 No 6
Feb 1960
Feb 1960 vol 9 No 7
Mar 1960
Mar 1960 Vol 9 No 8
Apr 1960
Apr 1960 Vol 9 No 9
May 1960
May 1960 Vol 9 No 10
Jun 1960
Jun 1960 Vol 9 No 11
Jul 1960
Jul 1960 Vol 9 No 12
Aug 1960
Aug 1960 Vol 10 No 1
Sep 1960
Sep 1960 Vol 10 No 2
Oct 1960
Oct 1960 Vol 10 No 3
Nov 1960
Nov 1960 Vol 10 No 4
Dec 1960
Dec 1960 Vol 10 No 5
Jan 1961
Jan 1961 Vol 10 No 6
Feb 1961
Feb 1961 Vol 10 No 7
Mar 1961
Mar 1961 Vol 10 No 8
Apr 1961
Apr 1961 Vol 10 No 9
May 1961
May 1961 Vol 10 No 10
Jun 1961
Jun 1961 Vol 10 No 11
Jul 1961
Jul 1961 Vol 10 No 12
Aug 1961
Aug 1961 Vol 11 No 1
Sep 1961
Sep 1961 Vol 11 No 2
Oct 1961
Oct 1961 Vol 11 No 3
Nov 1961
Nov 1961 Vol 11 No 4
Last Known Issue