1999 Cadillac Seville Sts V8 Auto — MOT History by Age

How cars manufactured in 1999 perform at MOT as they age

27 years

Current Age

68.9%

Latest Pass Rate

614

Total Tests (All Years)

74,053 mi

Avg Mileage (Latest)

Data from official DVSA MOT testing records

Compared to Average at Age 18

This car: 68.9%

Average: 54.3%

✅ 14.6% above average (8383 models compared)

How This Car Ages

Pass rate progression for the 1999 Cadillac Seville Sts V8 Auto as it ages.

10 yrs74.0%

→ ↑5.6%

11 yrs79.6%

→ ↓12.9%

12 yrs66.7%

→ ↑10.9%

13 yrs77.6%

→ ↓3.0%

14 yrs74.6%

→ ↓18.2%

15 yrs56.4%

→ ↑19.5%

16 yrs75.9%

→ ↓4.5%

17 yrs71.4%

→ ↓2.5%

18 yrs68.9%

📊 View as table

Age	Pass Rate	Tests
10 yrs	74.0%	96
11 yrs	79.6%	93
12 yrs	66.7%	87
13 yrs	77.6%	76
14 yrs	74.6%	59
15 yrs	56.4%	55
16 yrs	75.9%	54
17 yrs	71.4%	49
18 yrs	68.9%	45

Pass Rate Trend

How the 1999 Cadillac Seville Sts V8 Auto pass rate changes as it ages, from first MOT to most recent.

📊 View as table

Built	Pass Rate	Tests
2017 (18 yrs)	68.9%	45
2016 (17 yrs)	71.4%	49
2015 (16 yrs)	75.9%	54
2014 (15 yrs)	56.4%	55
2013 (14 yrs)	74.6%	59
2012 (13 yrs)	77.6%	76
2011 (12 yrs)	66.7%	87
2010 (11 yrs)	79.6%	93
2009 (10 yrs)	74%	96

Year-by-Year MOT Results

2009

74.0%

Age (yrs) 10Tests 96Avg Mileage 73,861Top Failure Lamps, Reflectors and Electrical Equipment — 17.7%

2010

79.6%

Age (yrs) 11Tests 93Avg Mileage 77,359Top Failure Brakes — 8.6%

2011

66.7%

Age (yrs) 12Tests 87Avg Mileage 78,326Top Failure Brakes — 23.0%

2012

77.6%

Age (yrs) 13Tests 76Avg Mileage 81,919Top Failure Brakes — 17.1%

2013

74.6%

Age (yrs) 14Tests 59Avg Mileage 73,927Top Failure Brakes — 50.8%

2014High Fail Rate

56.4%

Age (yrs) 15Tests 55Avg Mileage 81,162Top Failure Brakes — 70.9%

2015

75.9%

Age (yrs) 16Tests 54Avg Mileage 82,964Top Failure Brakes — 48.1%

2016

71.4%

Age (yrs) 17Tests 49Avg Mileage 79,520Top Failure Brakes — 30.6%

2017

68.9%

Age (yrs) 18Tests 45Avg Mileage 74,053Top Failure Suspension — 66.7%

MOT results for 1999 Cadillac Seville Sts V8 Auto by test year
Test Year▲	Age (yrs)▲▼	Pass Rate▲▼	Tests▲▼	Avg Mileage▲▼	Top Failure▲▼
2009	10	74.0%	96	73,861	Lamps, Reflectors and Electrical Equipment — 17.7%
2010	11	79.6%	93	77,359	Brakes — 8.6%
2011	12	66.7%	87	78,326	Brakes — 23.0%
2012	13	77.6%	76	81,919	Brakes — 17.1%
2013	14	74.6%	59	73,927	Brakes — 50.8%
2014	15	56.4%	55	81,162	Brakes — 70.9%
2015	16	75.9%	54	82,964	Brakes — 48.1%
2016	17	71.4%	49	79,520	Brakes — 30.6%
2017	18	68.9%	45	74,053	Suspension — 66.7%

Common MOT Failures

Top failure categories across all test years for 1999 Cadillac Seville Sts V8 Auto, with age trends.

Brakes

35.1%

↑ Increases with age

Suspension

21.4%

↑ Increases with age

Lamps, Reflectors and Electrical Equipment

19.6%

↑ Increases with age

Non-component advisories

13.3%

— Consistent

Exhaust, Fuel and Emissions

10.9%

— Consistent

How Failures Change With Age

Comparing failure rates between the youngest and oldest test years.

Category	At Youngest	At Oldest	Change	Trend
Suspension	4.2% (10 yrs)	66.7% (18 yrs)	+62.5%	🔴 ↑
Brakes	11.5% (10 yrs)	55.6% (18 yrs)	+44.1%	🔴 ↑
Lamps, Reflectors and Electrical Equipment	17.7% (10 yrs)	44.4% (18 yrs)	+26.7%	🔴 ↑
Steering	7.3% (10 yrs)	13.3% (18 yrs)	+6.0%	🔴 ↑

Other Manufacture Years

1998 1999 2000 2001

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About This Data

This page shows how Cadillac Seville Sts V8 Auto cars manufactured in 1999 perform at MOT as they age. Data spans from 2009 to 2017, covering 614 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.