Volkswagen Polo reliability: what 1.9m MOT tests show

Across 1,852,099 MOT tests on Volkswagen Polo cars first used between 2000 and 2022, 67.2% passed first time. The figure for all cars is 71.7%. Compared only with cars tested at the same age, the Polo is 2.2 points behind, so the model itself is below average, not just old. At its first MOT, at three years old, 90.1% of Polos pass; the national figure for three-year-old cars is 87.9%. The weakness shows with age rather than from new. When a Polo does fail, a worn suspension bush is the item recorded most often.

67.2%MOT pass rate, all years
-2.2points vs cars of the same age
1,852,099tests analysed
90.1%pass at first MOT, age 3

The Polo's weak points

The Polo's failures cluster around suspension and lights: a worn suspension bush on 7.1% of fails, a number plate light not working on 6.2%. Percentages can add to more than 100 because one failed test often records several defects.

1Suspension bush: excessively worn7.1%
2Number plate light: not working6.2%
3Wiper: not clearing the screen5.5%
4Sidelight: not working4.6%
5Tyre: tread below the 1.6mm legal minimum4.5%
6Track rod end: dust cover split4.4%

Worn bushes and ball joints build up slowly. A vague or clunky front end before the test is worth a garage check, since suspension is where tests are lost.

What testers flag before it fails

An advisory is the tester telling you what fails next year. On the Polo the usual suspects are tyre tread below the legal minimum (16.2% of tests) and a damaged tyre sidewall (11%). The advisory conversion table shows which of these are worth acting on first.

Tyre: tread below the 1.6mm legal minimum16.2%
Tyre: sidewall tear or separation11%
Suspension bush: excessively worn8.2%
Brake discs: seriously weakened7.9%
Shock absorbers: leaking3.7%

Does fuel type matter on a Polo?

Among Volkswagen Polo cars, petrol versions pass 68.1% of the time and diesel versions 55.7%, a gap of 12.4 points. Diesels tend to be bought for high mileage, which shows up at the test as wear.

FuelPass rateTests
Petrol68.1%1,707,336
Diesel55.7%144,063

Volkswagen Polo pass rate by year

The oldest Polos on the road, from 2000, pass 55.1% of the time; the 2022 cars pass 91.8%. Read the table as an age curve first and a quality ranking second.

First usedPass rateTestsMiles a yearFirst MOT pass
Volkswagen Polo 202291.8%23,3177,32791.7%
Volkswagen Polo 202188.5%59,3197,40188.7%
Volkswagen Polo 202088.2%77,7556,73990.3%
Volkswagen Polo 201982.4%108,0836,802–
Volkswagen Polo 201876.9%128,8236,801–
Volkswagen Polo 201777.9%135,8106,652–
Volkswagen Polo 201675.9%153,2176,722–
Volkswagen Polo 201573.2%152,2406,727–
Volkswagen Polo 201467.7%130,9826,712–
Volkswagen Polo 201363.6%114,5346,587–
Volkswagen Polo 201262.1%111,1086,484–
Volkswagen Polo 201158.6%117,6186,427–
Volkswagen Polo 201057.3%111,4916,235–
Volkswagen Polo 200954.1%69,3145,771–
Volkswagen Polo 200851.9%75,0785,778–
Volkswagen Polo 200751.8%69,1385,590–
Volkswagen Polo 200648.8%59,3905,421–
Volkswagen Polo 200547.8%46,2935,154–
Volkswagen Polo 200447.6%39,1684,898–
Volkswagen Polo 200347.5%31,7874,595–
Volkswagen Polo 200248.5%18,4914,331–
Volkswagen Polo 200154.4%11,5873,820–
Volkswagen Polo 200055.1%7,5563,743–

Pass rate by mileage

On the 2016 cars, a Polo under 40,000 miles passes 84.1% of the time; one over 100,000 passes 63.8%. When comparing two used Polos, the odometer tells you more than the year.

Mileage at test (2016 cars)Pass rateTests
Under 40,00084.1%46,309
40,000 to 60,00075.8%51,741
60,000 to 80,00070.9%34,986
80,000 to 100,00067%14,385
Over 100,00063.8%5,790

Compared with other cars

Set against the rest of the Volkswagen range, which averages 72.6%, the Polo at 67.2% is below par. Within the family, see how the Golf does (74.4%), the Tiguan (81.9%), Volkswagen Passat MOT pass rate (71.1%) and Volkswagen up! reliability (80.3%), or the Volkswagen range at the MOT. Buyers weighing a Polo against other cars of similar popularity often compare it with the Toyota Yaris (72.5%) and Nissan Qashqai (69.5%). The full reliability table puts them side by side, and the national MOT statistics give the baseline.

Failure lists and mileage by year

Each year opens to show its own failure list and pass rate by mileage.

Volkswagen Polo 2022 91.8% pass 23,317 tests91.7% at first MOT

On a 2022 Volkswagen Polo, a tyre worn or cut to the cords appears on 20.9% of failed tests, with wipers not clearing the screen next at 12.3%.

Tyre: deep cut reaching the cords20.9%
Wiper: not clearing the screen12.3%
Tyre: tread below the 1.6mm legal minimum9%
Brake pads: less than 1.5 mm thick8.5%
Tyre: cords exposed7.3%

2022 cars pass 92.3% of the time at under 40,000 miles, falling to 75% over 100,000.

Mileage at testPass rateTests
Under 40,00092.3%21,818
40,000 to 60,00085.4%1,299
60,000 to 80,00080.3%157
80,000 to 100,00087.1%31
Over 100,00075%12
Volkswagen Polo 2021 88.5% pass 59,319 tests88.7% at first MOT

On a 2021 Volkswagen Polo, wipers not clearing the screen appears on 31.7% of failed tests, with a tyre worn or cut to the cords next at 12.9%.

Wiper: not clearing the screen31.7%
Tyre: deep cut reaching the cords12.9%
Headlamp aim: too low7.7%
Tyre: tread below the 1.6mm legal minimum7.2%
Brake pads: less than 1.5 mm thick6.8%

2021 cars pass 89.5% of the time at under 40,000 miles, falling to 84.7% over 100,000.

Mileage at testPass rateTests
Under 40,00089.5%51,051
40,000 to 60,00082.7%6,715
60,000 to 80,00081.6%1,283
80,000 to 100,00080.1%211
Over 100,00084.7%59
Volkswagen Polo 2020 88.2% pass 77,755 tests90.3% at first MOT

On a 2020 Volkswagen Polo, wipers not clearing the screen appears on 26.3% of failed tests, with tyre tread below the legal minimum next at 9.9%.

Wiper: not clearing the screen26.3%
Tyre: tread below the 1.6mm legal minimum9.9%
Tyre: deep cut reaching the cords8.4%
Washer: not working7%
Brake pads: less than 1.5 mm thick6.7%

2020 cars pass 89.4% of the time at under 40,000 miles, falling to 71.1% over 100,000.

Mileage at testPass rateTests
Under 40,00089.4%64,668
40,000 to 60,00082.6%10,705
60,000 to 80,00081.4%1,922
80,000 to 100,00076.1%360
Over 100,00071.1%97
Volkswagen Polo 2019 82.4% pass 108,083 tests

On a 2019 Volkswagen Polo, a split track rod end dust cover appears on 25.6% of failed tests, with wipers not clearing the screen next at 19%.

Track rod end: dust cover split25.6%
Wiper: not clearing the screen19%
Track rod end: dust cover damaged11.7%
Tyre: tread below the 1.6mm legal minimum8.8%
Headlamp aim: too low6.3%

2019 cars pass 84.9% of the time at under 40,000 miles, falling to 72.8% over 100,000.

Mileage at testPass rateTests
Under 40,00084.9%74,041
40,000 to 60,00078.4%25,748
60,000 to 80,00073.2%6,650
80,000 to 100,00070.6%1,277
Over 100,00072.8%364

By fuel: petrol 82.5% (105,986 tests), diesel 79.3% (2,097 tests).

Volkswagen Polo 2018 76.9% pass 128,823 tests

On a 2018 Volkswagen Polo, a split track rod end dust cover appears on 42.1% of failed tests, with a split track rod end dust cover next at 14.2%.

Track rod end: dust cover split42.1%
Track rod end: dust cover damaged14.2%
Track rod end: ball joint dust cover insecure so that it no longer prevents the ingress of dirt8.7%
Tyre: tread below the 1.6mm legal minimum8.7%
Washer: not working6.6%

2018 cars pass 80.6% of the time at under 40,000 miles, falling to 66.2% over 100,000.

Mileage at testPass rateTests
Under 40,00080.6%68,527
40,000 to 60,00074.2%41,292
60,000 to 80,00070.6%14,382
80,000 to 100,00067.1%3,570
Over 100,00066.2%1,049

By fuel: petrol 76.9% (127,876 tests), diesel 75.7% (947 tests).

Volkswagen Polo 2017 77.9% pass 135,810 tests

On a 2017 Volkswagen Polo, a worn suspension bush appears on 19.5% of failed tests, with wipers not clearing the screen next at 10%.

Suspension bush: excessively worn19.5%
Wiper: not clearing the screen10%
Tyre: tread below the 1.6mm legal minimum9%
Brake pads: less than 1.5 mm thick8.2%
Washer: not working6.9%

2017 cars pass 84.4% of the time at under 40,000 miles, falling to 63.8% over 100,000.

Mileage at testPass rateTests
Under 40,00084.4%56,877
40,000 to 60,00076%46,592
60,000 to 80,00071.1%22,724
80,000 to 100,00066.1%7,107
Over 100,00063.8%2,508

By fuel: petrol 78.1% (132,408 tests), diesel 70.8% (3,402 tests).

Volkswagen Polo 2016 75.9% pass 153,217 tests

On a 2016 Volkswagen Polo, a worn suspension bush appears on 18.1% of failed tests, with tyre tread below the legal minimum next at 9%.

Suspension bush: excessively worn18.1%
Tyre: tread below the 1.6mm legal minimum9%
Wiper: not clearing the screen8.5%
Brake pads: less than 1.5 mm thick6.8%
Washer: not working6.1%

2016 cars pass 84.1% of the time at under 40,000 miles, falling to 63.8% over 100,000.

Mileage at testPass rateTests
Under 40,00084.1%46,309
40,000 to 60,00075.8%51,741
60,000 to 80,00070.9%34,986
80,000 to 100,00067%14,385
Over 100,00063.8%5,790

By fuel: petrol 76.2% (147,038 tests), diesel 67.3% (6,178 tests).

Volkswagen Polo 2015 73.2% pass 152,240 tests

On a 2015 Volkswagen Polo, a worn suspension bush appears on 15.5% of failed tests, with tyre tread below the legal minimum next at 8.7%.

Suspension bush: excessively worn15.5%
Tyre: tread below the 1.6mm legal minimum8.7%
Wiper: not clearing the screen7%
Brakes: binding6.7%
Warning light: on, or not working6.6%

2015 cars pass 83.7% of the time at under 40,000 miles, falling to 61.2% over 100,000.

Mileage at testPass rateTests
Under 40,00083.7%34,285
40,000 to 60,00075.2%45,589
60,000 to 80,00069.6%40,409
80,000 to 100,00064.7%20,896
Over 100,00061.2%11,058

By fuel: petrol 73.7% (140,945 tests), diesel 66.2% (11,295 tests).

Volkswagen Polo 2014 67.7% pass 130,982 tests

On a 2014 Volkswagen Polo, a worn suspension bush appears on 13.1% of failed tests, with a headlamp not working next at 9.3%.

Suspension bush: excessively worn13.1%
Headlamp: not working on dipped beam9.3%
Number plate light: not working8.6%
Tyre: tread below the 1.6mm legal minimum7.4%
Warning light: on, or not working7.3%

2014 cars pass 81% of the time at under 40,000 miles, falling to 56.5% over 100,000.

Mileage at testPass rateTests
Under 40,00081%21,723
40,000 to 60,00071.4%34,343
60,000 to 80,00065.4%36,035
80,000 to 100,00060.7%23,468
Over 100,00056.5%15,407

By fuel: petrol 68.2% (118,400 tests), diesel 62.4% (12,581 tests).

Volkswagen Polo 2013 63.6% pass 114,534 tests

On a 2013 Volkswagen Polo, a number plate light not working appears on 12.4% of failed tests, with a headlamp not working next at 11.3%.

Number plate light: not working12.4%
Headlamp: not working on dipped beam11.3%
Coil spring: fractured or broken9%
Suspension bush: excessively worn8.9%
Number plate light: not working8.6%

2013 cars pass 79% of the time at under 40,000 miles, falling to 53.8% over 100,000.

Mileage at testPass rateTests
Under 40,00079%14,935
40,000 to 60,00069.8%25,531
60,000 to 80,00062.3%31,440
80,000 to 100,00056.8%23,869
Over 100,00053.8%18,747

By fuel: petrol 64.3% (103,791 tests), diesel 56.8% (10,733 tests).

Volkswagen Polo 2012 62.1% pass 111,108 tests

On a 2012 Volkswagen Polo, a number plate light not working appears on 13.2% of failed tests, with a leaking shock absorbers next at 11.1%.

Number plate light: not working13.2%
Shock absorbers: leaking11.1%
Suspension bush: excessively worn10.3%
Headlamp: not working on dipped beam10.2%
Sidelight: not working9.2%

2012 cars pass 80.4% of the time at under 40,000 miles, falling to 53.1% over 100,000.

Mileage at testPass rateTests
Under 40,00080.4%11,863
40,000 to 60,00069.6%21,050
60,000 to 80,00061.3%28,401
80,000 to 100,00056.7%25,029
Over 100,00053.1%24,755

By fuel: petrol 62.7% (98,259 tests), diesel 56.8% (12,841 tests).

Volkswagen Polo 2011 58.6% pass 117,618 tests

On a 2011 Volkswagen Polo, a number plate light not working appears on 13.3% of failed tests, with a leaking shock absorbers next at 12.8%.

Number plate light: not working13.3%
Shock absorbers: leaking12.8%
Suspension bush: excessively worn10.6%
Sidelight: not working9.4%
Headlamp: not working on dipped beam8.9%

2011 cars pass 78.3% of the time at under 40,000 miles, falling to 50.9% over 100,000.

Mileage at testPass rateTests
Under 40,00078.3%9,894
40,000 to 60,00067.7%18,390
60,000 to 80,00059.2%27,093
80,000 to 100,00054.3%28,572
Over 100,00050.9%33,659

By fuel: petrol 59.2% (102,435 tests), diesel 54.5% (15,182 tests).

Volkswagen Polo 2010 57.3% pass 111,491 tests

On a 2010 Volkswagen Polo, a number plate light not working appears on 13.6% of failed tests, with a leaking shock absorbers next at 11.1%.

Number plate light: not working13.6%
Shock absorbers: leaking11.1%
Ball joint: dust cover split10.5%
Sidelight: not working9.9%
Coil spring: fractured or broken9.1%

2010 cars pass 77.5% of the time at under 40,000 miles, falling to 49.9% over 100,000.

Mileage at testPass rateTests
Under 40,00077.5%9,027
40,000 to 60,00067.1%15,711
60,000 to 80,00059.2%22,905
80,000 to 100,00053.5%25,385
Over 100,00049.9%38,452

By fuel: petrol 57.8% (98,679 tests), diesel 53.6% (12,806 tests).

Volkswagen Polo 2009 54.1% pass 69,314 tests

On a 2009 Volkswagen Polo, a split ball joint dust cover appears on 11.5% of failed tests, with a number plate light not working next at 10.9%.

Ball joint: dust cover split11.5%
Number plate light: not working10.9%
Coil spring: fractured or broken10.6%
Parking brake: efficiency below the limit10%
Sidelight: not working10%

2009 cars pass 76.1% of the time at under 40,000 miles, falling to 45.7% over 100,000.

Mileage at testPass rateTests
Under 40,00076.1%5,804
40,000 to 60,00063.7%10,471
60,000 to 80,00056.1%14,786
80,000 to 100,00049.6%15,713
Over 100,00045.7%22,516

By fuel: petrol 54.8% (60,312 tests), diesel 49.4% (8,999 tests).

Volkswagen Polo 2008 51.9% pass 75,078 tests

On a 2008 Volkswagen Polo, a split CV boot appears on 14.2% of failed tests, with a sidelight not working next at 12%.

Driveshaft joint: CV boot split14.2%
Sidelight: not working12%
Number plate light: not working10.2%
Coil spring: fractured or broken9.8%
Parking brake: efficiency below the limit9.7%

2008 cars pass 72% of the time at under 40,000 miles, falling to 45% over 100,000.

Mileage at testPass rateTests
Under 40,00072%4,576
40,000 to 60,00062.9%9,595
60,000 to 80,00054.9%14,978
80,000 to 100,00049.4%16,791
Over 100,00045%29,112

By fuel: petrol 52.5% (61,618 tests), diesel 49.2% (13,457 tests).

Volkswagen Polo 2007 51.8% pass 69,138 tests

On a 2007 Volkswagen Polo, a split CV boot appears on 19.5% of failed tests, with a sidelight not working next at 11.1%.

Driveshaft joint: CV boot split19.5%
Sidelight: not working11.1%
Driveshaft joint: CV boot perished10.6%
Number plate light: not working10.2%
Ball joint: dust cover split9.5%

2007 cars pass 73.3% of the time at under 40,000 miles, falling to 45% over 100,000.

Mileage at testPass rateTests
Under 40,00073.3%3,840
40,000 to 60,00064.1%8,064
60,000 to 80,00055.2%12,785
80,000 to 100,00050.3%15,312
Over 100,00045%29,081

By fuel: petrol 52% (61,182 tests), diesel 50.9% (7,947 tests).

Volkswagen Polo 2006 48.8% pass 59,390 tests

On a 2006 Volkswagen Polo, a split CV boot appears on 19.5% of failed tests, with a sidelight not working next at 13.1%.

Driveshaft joint: CV boot split19.5%
Sidelight: not working13.1%
Headlamp aim: aim incorrect11.5%
Number plate light: not working11.5%
Driveshaft joint: CV boot perished10.8%

2006 cars pass 70.1% of the time at under 40,000 miles, falling to 42.6% over 100,000.

Mileage at testPass rateTests
Under 40,00070.1%2,799
40,000 to 60,00061.6%6,214
60,000 to 80,00052.9%10,410
80,000 to 100,00047.5%13,394
Over 100,00042.6%26,549

By fuel: petrol 48.8% (53,792 tests), diesel 48.4% (5,598 tests).

Volkswagen Polo 2005 47.8% pass 46,293 tests

On a 2005 Volkswagen Polo, a split CV boot appears on 17.4% of failed tests, with headlamp aim out of adjustment next at 17.2%.

Driveshaft joint: CV boot split17.4%
Headlamp aim: aim incorrect17.2%
Sidelight: not working13.4%
Number plate light: not working10.6%
Warning light: on, or not working10.2%

2005 cars pass 66.8% of the time at under 40,000 miles, falling to 42.7% over 100,000.

Mileage at testPass rateTests
Under 40,00066.8%2,069
40,000 to 60,00059.2%4,966
60,000 to 80,00051.2%8,384
80,000 to 100,00046.2%10,133
Over 100,00042.7%20,724

By fuel: petrol 47.8% (40,114 tests), diesel 47.9% (6,179 tests).

Volkswagen Polo 2004 47.6% pass 39,168 tests

On a 2004 Volkswagen Polo, headlamp aim out of adjustment appears on 20.4% of failed tests, with a split CV boot next at 15.4%.

Headlamp aim: aim incorrect20.4%
Driveshaft joint: CV boot split15.4%
Sidelight: not working14.2%
Warning light: on, or not working12%
Brake light: not working10.6%

2004 cars pass 66% of the time at under 40,000 miles, falling to 42.8% over 100,000.

Mileage at testPass rateTests
Under 40,00066%1,946
40,000 to 60,00058.3%4,379
60,000 to 80,00050.5%7,213
80,000 to 100,00045.4%8,416
Over 100,00042.8%17,194

By fuel: petrol 47.7% (32,617 tests), diesel 47.1% (6,548 tests).

Volkswagen Polo 2003 47.5% pass 31,787 tests

On a 2003 Volkswagen Polo, headlamp aim out of adjustment appears on 20.1% of failed tests, with a sidelight not working next at 14%.

Headlamp aim: aim incorrect20.1%
Sidelight: not working14%
Warning light: on, or not working12.6%
Driveshaft joint: CV boot split12.3%
Brake light: not working10%

2003 cars pass 66.9% of the time at under 40,000 miles, falling to 42.2% over 100,000.

Mileage at testPass rateTests
Under 40,00066.9%1,772
40,000 to 60,00056.6%3,797
60,000 to 80,00050.2%5,958
80,000 to 100,00045.4%6,746
Over 100,00042.2%13,475

By fuel: petrol 47.6% (27,702 tests), diesel 46.3% (4,079 tests).

Volkswagen Polo 2002 48.5% pass 18,491 tests

On a 2002 Volkswagen Polo, headlamp aim out of adjustment appears on 18.4% of failed tests, with a sidelight not working next at 13.1%.

Headlamp aim: aim incorrect18.4%
Sidelight: not working13.1%
Driveshaft joint: CV boot split11.1%
Coil spring: fractured or broken10.7%
Suspension bush: excessively worn10.3%

2002 cars pass 64.9% of the time at under 40,000 miles, falling to 43.2% over 100,000.

Mileage at testPass rateTests
Under 40,00064.9%1,112
40,000 to 60,00055.1%2,334
60,000 to 80,00051.9%3,629
80,000 to 100,00047.2%3,860
Over 100,00043.2%7,536

By fuel: petrol 48.3% (16,211 tests), diesel 49.9% (2,276 tests).

Volkswagen Polo 2001 54.4% pass 11,587 tests

On a 2001 Volkswagen Polo, a split CV boot appears on 15.2% of failed tests, with headlamp aim out of adjustment next at 14.4%.

Driveshaft joint: CV boot split15.2%
Headlamp aim: aim incorrect14.4%
Sidelight: not working12.5%
Exhaust system: major leak10.6%
Wiper: not clearing the screen9.9%

2001 cars pass 67.2% of the time at under 40,000 miles, falling to 50.1% over 100,000.

Mileage at testPass rateTests
Under 40,00067.2%921
40,000 to 60,00058.6%2,013
60,000 to 80,00054.7%2,622
80,000 to 100,00052%2,321
Over 100,00050.1%3,689

By fuel: petrol 54.1% (10,668 tests), diesel 57.1% (918 tests).

Volkswagen Polo 2000 55.1% pass 7,556 tests

On a 2000 Volkswagen Polo, headlamp aim out of adjustment appears on 14% of failed tests, with an emissions reading over the limit next at 10.6%.

Headlamp aim: aim incorrect14%
Emissions: lambda reading out of limits10.6%
Exhaust system: major leak9.7%
Sidelight: not working9.3%
ABS: ABS warning lamp on9%

2000 cars pass 66.8% of the time at under 40,000 miles, falling to 51.7% over 100,000.

Mileage at testPass rateTests
Under 40,00066.8%567
40,000 to 60,00062.8%1,162
60,000 to 80,00055.7%1,637
80,000 to 100,00050.2%1,494
Over 100,00051.7%2,679

Questions people ask

Is the Volkswagen Polo reliable?

On MOT evidence the Volkswagen Polo is below average. It passes 67.2% of tests against 71.7% for all cars, and trails cars of the same age by 2.2 points. 90.1% pass their first MOT at three years old. Figures from 1,852,099 DVSA tests.

What are the most common Volkswagen Polo MOT failures?

A worn suspension bush (7.1% of failed tests), a number plate light not working (6.2%) and wipers not clearing the screen (5.5%). Worn bushes and ball joints build up slowly. A vague or clunky front end before the test is worth a garage check, since suspension is where tests are lost.

Which Volkswagen Polo year is the most reliable?

Among years with a large sample, 2022 cars have the highest pass rate at 91.8% and 2003 cars the lowest at 47.5%. Newer years pass more because they are younger, so compare a specific car's year against the table above rather than against the overall figure.

What advisories does a Volkswagen Polo usually get?

Tyre tread below the legal minimum is the most frequent, noted on 16.2% of all Polo tests, then a damaged tyre sidewall (11%). An advisory passes the car today but marks the item most likely to fail next year.

How many miles a year does a Volkswagen Polo do?

About 6,360 miles a year on average, calculated from the odometer readings recorded at consecutive MOTs. That is close to the UK average of roughly 7,400.

How do I check a particular Volkswagen Polo?

The figures describe the whole fleet. For one car, enter its registration in the free MOT check to see its own test history, advisories and mileage, set against these averages for its year.

Own a Polo?

Enter the registration to see its own MOT history, advisories and mileage set against these figures, including whether it has done more or fewer than the 6,360 miles a year typical of the model.

Source: DVSA anonymised MOT tests and results, 2023 to 2025. Class 4 cars, normal tests only; a pass after rectification counts as an initial failure. Age-adjusted figures compare the model's pass rate at each age with the national rate at the same age. Methodology.