Ford B-Max years to avoid — 160,738 MOT tests ranked

Inspect most carefully: 2017, 2018. Strongest in the data: 2015 or 2016. The ranking uses 160,738 MOT tests across 7 registration years (2023–2025) and compares each year with all UK cars of the same age. Fuel-type signal: diesels show an average 8.1-point pass-rate deficit on this model. That may reflect mileage and use as well as the car itself, so inspect DPF and emissions history rather than treating fuel type as a verdict.

Every B-Max year, ranked

The age-adjusted MOT index sets 100 as the pass rate of all UK cars registered in the same year and tested in the same calendar year. Higher is better. This prevents an old car being labelled a “bad year” simply because it is old.

Rank	Year	Index	Vs same-age	Pass rate	Tests
1	2015 Strong	102.9	+2.9 pts	81.6%	29,327
2	2016 Strong	102.3	+2.3 pts	83.6%	21,294
3	2014	101.5	+1.5 pts	77.4%	38,490
4	2012	100.3	+0.3 pts	71.5%	8,780
5	2013	99.2	-0.8 pts	72.6%	43,709
6	2017 Inspect	96.9	-3.1 pts	80.9%	17,095
7	2018 Inspect	92.3	-7.7 pts	78.6%	2,043

Why 2017 and 2018 rank lower

The 2017 cohort passes 80.9% of tests (-3.1 points versus same-age cars) at a median 33,115 miles, with suspension the leading failure system. The 2018 cohort passes 78.6% of tests (-7.7 points versus same-age cars) at a median 31,974 miles, with suspension the leading failure system. This is population-level evidence, not a known-fault list: service history, engine version and the individual MOT record can outweigh the registration-year average.

How to use this before buying

Rankings describe the cohort, not the car. A cherished 2017 example beats a neglected 2015 one — always run the specific reg through the free MOT history check.
Read the advisories. Repeated notes for the same component across years mean the owner has been ignoring it. Decode them in our advisory library.
Fuel matters on this model. The diesel deficit (8.1 points) usually traces to DPF and emissions kit on low-mileage use — check for P2463-type soot codes on the test drive.
Scan before you pay. A 2-minute OBD scan reveals stored faults the dashboard hides — see our scanner guide.

FAQs

Which B-Max years should I avoid?

Based on 160,738 MOT tests adjusted against cars of the same age, 2017, 2018 are the lower-scoring outliers. That is a prompt for closer inspection, not proof that every car from those years is bad.

What is the best B-Max year to buy used?

2015 and 2016 lead the age-adjusted MOT ranking. The score compares each registration year with all UK cars of the same age; the specific car's history and condition still take priority.

Is the B-Max reliable overall?

Across 160,738 tests, the median age-adjusted index is 100.3 (100 equals the pass rate of all cars registered in the same year). Use the spread between years as one signal, then check the individual registration.

Methodology: index = 100 + the model-year cohort’s MOT pass-rate difference versus all UK vehicles registered in the same year and tested in the same calendar year. Class 4 initial tests only; retests excluded; at least 1,500 tests per page. “Inspect” years are below both the same-age baseline and the model’s median index by at least 2 points. Association is not proof of a model-year defect. DVSA anonymised data 2023–2025, OGL v3.0.