2006 Mercedes Gl 420 — MOT History by Age

How cars manufactured in 2006 perform at MOT as they age

20 years

Current Age

69.4%

Latest Pass Rate

781

Total Tests (All Years)

129,345 mi

Avg Mileage (Latest)

Data from official DVSA MOT testing records

Compared to Average at Age 14

This car: 69.4%

Average: 52.5%

✅ 16.9% above average (12051 models compared)

How This Car Ages

Pass rate progression for the 2006 Mercedes Gl 420 as it ages.

3 yrs87.5%

→ ↓4.2%

4 yrs83.3%

→ ↓2.0%

5 yrs81.3%

→ ↓7.3%

6 yrs74.0%

→ ↑5.7%

7 yrs79.7%

→ ↓4.4%

8 yrs75.3%

→ ↓3.9%

9 yrs71.4%

→ ↑7.4%

10 yrs78.8%

→ ↑0.9%

11 yrs79.7%

→ ↓12.3%

12 yrs67.4%

→ ↑11.5%

13 yrs78.9%

→ ↓9.5%

14 yrs69.4%

📊 View as table

Age	Pass Rate	Tests
3 yrs	87.5%	72
4 yrs	83.3%	72
5 yrs	81.3%	80
6 yrs	74.0%	73
7 yrs	79.7%	74
8 yrs	75.3%	85
9 yrs	71.4%	70
10 yrs	78.8%	66
11 yrs	79.7%	69
12 yrs	67.4%	46
13 yrs	78.9%	38
14 yrs	69.4%	36

Pass Rate Trend

How the 2006 Mercedes Gl 420 pass rate changes as it ages, from first MOT to most recent.

📊 View as table

Built	Pass Rate	Tests
2020 (14 yrs)	69.4%	36
2019 (13 yrs)	78.9%	38
2018 (12 yrs)	67.4%	46
2017 (11 yrs)	79.7%	69
2016 (10 yrs)	78.8%	66
2015 (9 yrs)	71.4%	70
2014 (8 yrs)	75.3%	85
2013 (7 yrs)	79.7%	74
2012 (6 yrs)	74%	73
2011 (5 yrs)	81.3%	80
2010 (4 yrs)	83.3%	72
2009 (3 yrs)	87.5%	72

Year-by-Year MOT Results

2009

87.5%

Age (yrs) 3Tests 72Avg Mileage 35,258Top Failure Brakes — 6.9%

2010

83.3%

Age (yrs) 4Tests 72Avg Mileage 50,105Top Failure Lamps, Reflectors and Electrical Equipment — 8.3%

2011

81.3%

Age (yrs) 5Tests 80Avg Mileage 55,286Top Failure Lamps, Reflectors and Electrical Equipment — 10.0%

2012

74.0%

Age (yrs) 6Tests 73Avg Mileage 70,916Top Failure Brakes — 11.0%

2013

79.7%

Age (yrs) 7Tests 74Avg Mileage 75,350Top Failure Brakes — 32.4%

2014

75.3%

Age (yrs) 8Tests 85Avg Mileage 83,912Top Failure Tyres — 23.5%

2015

71.4%

Age (yrs) 9Tests 70Avg Mileage 92,273Top Failure Brakes — 31.4%

2016

78.8%

Age (yrs) 10Tests 66Avg Mileage 98,001Top Failure Brakes — 25.8%

2017

79.7%

Age (yrs) 11Tests 69Avg Mileage 108,158Top Failure Suspension — 24.6%

2018

67.4%

Age (yrs) 12Tests 46Avg Mileage 111,963Top Failure Brakes — 45.7%

2019

78.9%

Age (yrs) 13Tests 38Avg Mileage 108,706Top Failure Lamps, reflectors and electrical equipment — 18.4%

2020

69.4%

Age (yrs) 14Tests 36Avg Mileage 129,345Top Failure Brakes — 91.7%

MOT results for 2006 Mercedes Gl 420 by test year
Test Year▲	Age (yrs)▲▼	Pass Rate▲▼	Tests▲▼	Avg Mileage▲▼	Top Failure▲▼
2009	3	87.5%	72	35,258	Brakes — 6.9%
2010	4	83.3%	72	50,105	Lamps, Reflectors and Electrical Equipment — 8.3%
2011	5	81.3%	80	55,286	Lamps, Reflectors and Electrical Equipment — 10.0%
2012	6	74.0%	73	70,916	Brakes — 11.0%
2013	7	79.7%	74	75,350	Brakes — 32.4%
2014	8	75.3%	85	83,912	Tyres — 23.5%
2015	9	71.4%	70	92,273	Brakes — 31.4%
2016	10	78.8%	66	98,001	Brakes — 25.8%
2017	11	79.7%	69	108,158	Suspension — 24.6%
2018	12	67.4%	46	111,963	Brakes — 45.7%
2019	13	78.9%	38	108,706	Lamps, reflectors and electrical equipment — 18.4%
2020	14	69.4%	36	129,345	Brakes — 91.7%

Common MOT Failures

Top failure categories across all test years for 2006 Mercedes Gl 420, with age trends.

Brakes

24.8%

↑ Increases with age

Lamps, reflectors and electrical equipment

24.6%

↓ Decreases with age

Tyres

13.5%

↑ Increases with age

Lamps, Reflectors and Electrical Equipment

12.6%

↑ Increases with age

Suspension

10.9%

↑ Increases with age

How Failures Change With Age

Comparing failure rates between the youngest and oldest test years.

Category	At Youngest	At Oldest	Change	Trend
Brakes	6.9% (3 yrs)	91.7% (14 yrs)	+84.8%	🔴 ↑
Suspension	2.8% (3 yrs)	25.0% (14 yrs)	+22.2%	🔴 ↑
Tyres	5.6% (3 yrs)	25.0% (14 yrs)	+19.4%	🔴 ↑

Other Manufacture Years

2006 2007 2008

← Back to Mercedes Gl 420 overview

Looking for the best year to buy? See the full comparison on the Mercedes Gl 420 page →

About This Data

This page shows how Mercedes Gl 420 cars manufactured in 2006 perform at MOT as they age. Data spans from 2009 to 2020, covering 781 tests. Pass rates naturally decline with age as components wear.

Based on DVSA anonymised MOT test data (2005–2024). Crown copyright, Open Government Licence v3.0.