Toyota Corolla XII (E21) or SEAT Leon III: which has fewer APK problems?

At 7–8 years (mostly built 2017–2019) 0.6% of inspected Toyota Corolla XII (E21)s had at least one A-problem, against 3.2% for the SEAT Leon III and 3.1% nationally. The Toyota Corolla XII (E21) does clearly better at this age: the confidence intervals do not overlap. Over all ages together the Toyota Corolla XII (E21) has an A-problem 71% less often than average, the SEAT Leon III about as often.

Window: Oct 2025 – Sep 2026 · Updated: 16 Oct 2026

At this age the Corolla XII (E21) has fewer A-problems.

Also check the weak spots and the history of the specific car.

ModelModel years

Toyota Corolla XII (E21)

2019 – 2026

Illustration Toyota Corolla XII (E21)

SEAT Leon III

2012 – 2021

Illustration SEAT Leon III
AA-problemsDefects at the APK

0.6%

n = 510 · 95% CI 0.2 – 1.7%

3.2%

n = 6,505 · 95% CI 2.8 – 3.7%

All defectsAll kinds of APK defects

19.4%

n = 510 · 95% CI 16.2 – 23.1%

28.5%

n = 6,505 · 95% CI 27.4 – 29.6%

Three points to checkMost common defects at the APK

Not enough data

  1. 1Springs and shock absorbers
  2. 2Seat belts, seats and airbags
  3. 3Brakes
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A-problems side by side

Percentages with 95% confidence intervals.

02468101214161820 A-problems (%) National: 3.1% · n = 884,744 · 95% CI 3.1 – 3.1% Toyota Corolla XII (E21)2019 – 2026 0.6% (n = 510 · 95% CI 0.2 – 1.7%) SEAT Leon III2012 – 2021 3.2% (n = 6,505 · 95% CI 2.8 – 3.7%)

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More comparisons

Source: RDW Open Data (CC0), analysis CarXray.nl. 6,857,004 inspected passenger cars aged 3 years and older, Oct 2025 – Sep 2026. Each car counts once. How we know