Lexus GS - Problems, Statistics, and Analysis

Lexus GS owners have reported a total of 206 problems for their cars built in the 22 model years listed in the chart below. The chart shows the number of problems reported across all service years for each given model year of the Lexus GS. The 2006 Lexus GS cars have the most problems reported (60 problems).

Table 1. Total number of problems by model year for Lexus GS

Model Year	Number of Problems
2019 GS	1
2018 GS	2
2017 GS	2
2016 GS	5
2015 GS	7
2014 GS	3
2013 GS	26
2012 GS	1
2011 GS	3
2010 GS	13
2009 GS	2
2008 GS	17
2007 GS	31
2006 GS	60
2005 GS	2
2004 GS	1
2003 GS	6
2002 GS	1
2001 GS	7
1999 GS	8
1998 GS	7
1996 GS	1

🔍 Common problems of Lexus GS

The following chart shows the 24 most common problems for Lexus GS cars. The number one most common problem is related to the vehicle's engine and engine cooling (27 problems). The second most common problem is related to the vehicle's equipment (24 problems).

Table 2. Common problems of Lexus GS

Problem Category	Number of Problems
Engine And Engine Cooling	27
Equipment	24
Steering	20
Visibility	17
Service Brakes	16
Other Fuel System	13
Exterior Lighting	12
Air Bag	11
Electrical System	11
Power Train	9

Structure	8
Suspension	7
Vehicle Speed Control	7
Seat Belt	4
Electronic Stability Control	4
Gasoline Fuel System	3
Lane Departure	3
Wheel	3
Seats	2
	1
Forward Collision Avoidance	1
Latches/locks/linkage	1
Hybrid Propulsion System	1
Back Over Prevention	1

📉 Compare Reliability Across Model Years Using PPMY Index

It would not be fair to compare the Lexus GS of an older model year to newer model years since older vehicles have been in service longer and thus are expected to have more problems. In order to compare the reliability across GS model years, we use the PPMY index which is defined as the problems reported per thousand vehicles per Year. A smaller PPMY index indicates greater reliability of the given model year cars.

PPMY = P / S / Y * 1000,

where P = total problems reported during the life of a Lexus GS model year; S = total units sold of the model year; Y = years since the debut of the model year (the age of the vehicle).

The results are shown in Table 3.

Table 3. Use PPMY Index to Compare Reliability Across GS Model Years

GS Model Year	Problems	Sales [1]	Vehicle Age	PPMY Index
2019	1	3,938	7	0.04
2018	2	7,062	8	0.04
2017	2	7,039	9	0.03
2016	5	13,443	10	0.04
2015	7	27,318	11	0.02
2014	3	20,340	12	0.01
2013	26	39,130	13	0.05
2011	3	5,060	15	0.04
2010	13	6,560	16	0.12
2009	2	5,021	17	0.02
2008	17	19,250	18	0.05
2007	31	25,259	19	0.06
2006	60	51,221	20	0.06
2005	2	3,003	21	0.03
2004	1	9,757	22	0.00
2003	6	14,559	23	0.02
2002	1	17,863	24	0.00
2001	7	29,858	25	0.01

📊 Number of Problems Reported During the First Year

Another way to measure the reliability across the model years of the Lexus GS is to use the total number of problems reported during the vehicle's first year in service, as shown in the Table 4.

Table 4. Number of problems in vehicle's; first service year

Model Year	Problems Reported
2011 GS	1
2010 GS	1

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