Ford Grand C-Max years to avoid — 105,625 MOT tests ranked

Inspect most carefully: 2018, 2019. Strongest in the data: 2011 or 2012. The ranking uses 105,625 MOT tests across 9 registration years (2023–2025) and compares each year with all UK cars of the same age. Fuel-type signal: diesels show an average 3.3-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 Grand C-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	2012 Strong	99.0	-1.0 pts	70.3%	11,224
2	2011 Strong	97.5	-2.5 pts	66.7%	15,483
3	2013	97.5	-2.5 pts	70.8%	13,284
4	2015	96.7	-3.3 pts	75.5%	11,195
5	2017	96.2	-3.8 pts	80.3%	11,537
6	2014	96.1	-3.9 pts	72.0%	12,106
7	2016	95.7	-4.3 pts	77.0%	19,487
8	2018 Inspect	93.8	-6.2 pts	80.1%	8,078
9	2019 Inspect	93.7	-6.3 pts	82.1%	3,231

Why 2018 and 2019 rank lower

The 2018 cohort passes 80.1% of tests (-6.2 points versus same-age cars) at a median 43,748 miles, with tyres the leading failure system. The 2019 cohort passes 82.1% of tests (-6.3 points versus same-age cars) at a median 32,490 miles, with tyres 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 2018 example beats a neglected 2011 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 (3.3 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 Grand C-Max years should I avoid?

Based on 105,625 MOT tests adjusted against cars of the same age, 2018, 2019 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 Grand C-Max year to buy used?

2011 and 2012 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 Grand C-Max reliable overall?

Across 105,625 tests, the median age-adjusted index is 96.2 (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.