MOT cost .

Mazda

RX 7

686 MOT tests analysed. sits above the UK fleet average — here's where RX 7s pass, fail, and end up on the retest sheet.

That's 7.5 points above the UK fleet average across our 1,988 tracked models — a confident result.

Pass

83.2%

Pass-after-fix

3.8%

Fail

11.4%

Avg miles

77,119

Pass + Pass-after-fix + Fail = 100%

The picture

Rx-7: above-average pass rates, with caveats

Across 686 MOT tests, the Rx-7 returns 83.2% first-time pass — above the UK fleet average. The single most-logged Major fail is lambda coefficient outside the default limits. A torn suspension dust cover and a lamp out round out the top three. Average tested mileage sits at 77,119, which is the lens to read those failure rankings through. If you own one and the next test is close, the ranked list below is a sensible pre-test checklist.

Top ten reasons for rejection.

  1. 01

    Lambda coefficient outside the default limits or the range specified by the manufacturer

    22 occurrences · 3.2% of tests

  2. 02

    A suspension joint dust cover severely deteriorated

    17 occurrences · 2.5% of tests

  3. 03

    A lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning

    14 occurrences · 2.0% of tests

  4. 04

    Emissions levels exceed the manufacturer's specified limits

    10 occurrences · 1.5% of tests

  5. 05

    Steering rack gaiter or ball joint dust cover damaged or deteriorated

    9 occurrences · 1.3% of tests

  6. 06

    An obligatory rear fog lamp missing, or a front or rear fog lamp inoperative or in the case of a multiple light source more than 1/2 not functioning

    9 occurrences · 1.3% of tests

  7. 07

    The strength or continuity of the load bearing structure within 30cm of any sub-frame, spring or suspension component mounting (a 'prescribed area') is significantly reduced or inadequately repaired

    9 occurrences · 1.3% of tests

  8. 08

    Emissions levels exceed the manufacturer's specified limits

    9 occurrences · 1.3% of tests

  9. 09

    Emissions levels exceed default limits

    9 occurrences · 1.3% of tests

  10. 10

    Emissions levels exceed default limits

    9 occurrences · 1.3% of tests

Counts cover Major and Dangerous defects logged at test. Advisory items excluded so this shows why a car was rejected, not just what the tester flagged in passing.

Worst-case fix budget · top 2 failures

£160–£480

If every one of this RX 7's most-logged Major fails hit at the same MOT, that's the real-world UK garage range. Reality is usually one or two items, not all of them. Open the estimator →

Try the calculator

Build your own retest budget.

Buying or keeping a RX 7?

Use the failure ranking as a pre-test checklist or a haggling lever. Treat the headline pass rate as a fleet-wide trend, not a guarantee on any individual car.

If you own a RX 7 and your last MOT looked nothing like the ranked failures above, that's normal — individual cars vary widely. The ranking shows the patterns testers flag most often across the country.