Performance by cohort

3 year bands · 75,936 tests

Pass rate climbs 4.1 points across the cohorts — newer Doblo examples clear the test more reliably than the early cars.

Pre-2018 cohort 68,400

Pass

70.5%

Fail

24.0%

PRS

4.7%

Avg mileage at test

91,165 mi

2018–2020 cohort 6,140

Pass

76.7%

Fail

18.5%

PRS

4.2%

Avg mileage at test

54,172 mi

2021+ cohort 1,396

Pass

74.6%

Fail

19.9%

PRS

4.6%

Avg mileage at test

44,398 mi

Cohort = vehicle's first-registration year band. Same model, different generations of build.

Generations on file · 3

Fiat Doblo · UK market

Photos: Wikimedia Commons · CC BY-SA / CC BY / public domain.

The picture

Fiat Doblo at 71.4%: below average MPV-van with suspension and exhaust concerns

The Fiat Doblo posts 71.4% first-time pass from 58,164 tests at an average presenting mileage of 89,743. Top failures are suspension pin and bush wear, exhaust leaks and tyre tread. The Doblo's van-derived rear suspension works hard under combined passenger and load use, and bush wear at this mileage is consistent with the failure profile. Exhaust manifold leaks are a recurring issue on the 1.3-litre MultiJet diesel, particularly at the downpipe joint. CV boot deterioration also features. At 71.4% and below average, the Doblo needs undercar inspection before test. Pre-test: check front suspension bushes, inspect the exhaust manifold and downpipe joint for leaks.

ABI Insurance Group

Group 14–22

Below the fleet average — generally reasonable to insure. Lower groups cost less to insure; UK fleet average is around Group 22.

Source: ABI Group Rating Panel · administered by Thatcham Research · groups cover standard variants; performance trims may sit higher. Browse all insurance groups →

14–22

out of 50

Compare quotes →

Top ten reasons for rejection.

Filter failures:

Hide wear items to see the model's real defects.

01

Windscreen or window damaged or seriously discoloured but not adversely affecting driver's view

3,870 occurrences · 5.1% of tests
02

A spring or spring component fractured or seriously weakened

2,674 occurrences · 3.5% of tests
03

A rear registration plate lamp or light source missing or inoperative in the case of multiple lamps or light sources

2,116 occurrences · 2.8% of tests
04

Headlamp reflector or lens slightly defective

1,962 occurrences · 2.6% of tests
05

Tyre tread depth not in accordance with the requirements

1,677 occurrences · 2.2% of tests
06

A tyre cords visible or damaged

1,403 occurrences · 1.8% of tests
07

The aim of a headlamp is not within limits laid down in the requirements

1,255 occurrences · 1.7% of tests
08

A suspension pin, bush or joint excessively worn

1,229 occurrences · 1.6% of tests
09

Wiper blade missing or obviously not clearing the windscreen

1,217 occurrences · 1.6% of tests
10

A transmission shaft constant velocity joint boot severely deteriorated

1,166 occurrences · 1.5% 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 4 failures

£158–£450

If every one of this Doblo'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 →

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Build your own retest budget.

Year-band analysis

Best year to buy. Worst to avoid.

First-time MOT pass rate split by registration band. A 6.2-point gap between bands means the year you buy Fiat Doblo has a real effect on what turns up at the garage.

Best band to buy

76.7%

2018–2020 registration

the 2018–2020 band climbs to 76.7% — a 6.2-point improvement. Tests in this band average 54,172 miles — roughly 37K miles fewer on the clock than the older band. Failures here are mostly wear items: damaged but not adversely affecting driver's view, fractured or broken — the structural issues that drag down older examples don't appear in the top-10 for this band. The stricter post-2018 MOT test rules meant manufacturers had to tighten up emissions and electrical checks, but this band still shows far fewer major failures on suspension and bodywork than the older fleet.

Band to be cautious about

70.5%

Pre-2018 registration

On the older band (pre-2018), the data shows a 70.5% pass rate against a fleet average of 76.7% on the newer band. The main culprits logged at test: damaged but not adversely affecting driver's view, fractured or broken, and inoperative in the case of multiple lamps…. Average mileage on test for this band is 91,165 miles — high-mileage wear items are a recurring theme.

Best band to buy: 2018-2020 (76.7% first-time pass). Worst band to avoid: pre-2018 (70.5% pass). That's a 6.2-point spread across 68,400 older tests and 6,140 newer ones — year of build makes a material difference on this model.

Year-spread leaderboard →

Tools that pre-empt a retest.

Picked against this car's top failure patterns. Affiliate links to Amazon UK — we earn a small cut at no cost to you. Disclosed up-front, doesn't shape the data.

Item 01 · Amazon UK

H7 / W21W bulb pack

A spare-bulb kit lives in the boot. Test morning is not the time to find your stop-lamp's gone.

Search Amazon UK

Item 02 · Amazon UK

Headlight restoration kit

Yellowed lenses fail the light-output test. A restoration kit lifts the haze in an afternoon for £20.

Search Amazon UK

Item 03 · Amazon UK

Digital tyre-tread depth gauge

Five quid for a gauge beats £150 for a retest. UK MOT minimum is 1.6mm — most testers fail anything below 2mm to be safe.

Search Amazon UK

My Motor World · affiliate

Parts & supplies for this fix

Affiliate links — small commission, no extra cost to you.

Hycote

Hycote Touch Up Colour Paint Brush Fiat Broom Yellow 12.5ml

£6.59

View at My Motor World →

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Hycote Fiat Capri Blue Double Acrylic Spray Paint 150ml

£6.59

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Hycote Fiat Black Double Acrylic Spray Paint 150ml

£6.59

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Hycote Fiat Red Orange Double Acrylic Spray Paint 150ml

£6.59

View at My Motor World →

Click Mechanic · affiliate

Book a mobile mechanic

Affiliate links — small commission, no extra cost to you.

Mobile mechanic · UK-wide

Book a mechanic at your door.

Fixed-price quotes upfront. No garage needed. Click Mechanic sends a vetted local mechanic to you — home, work, or roadside.

Get a quote →

Owner reports · Honest John

What owners actually report.

Verbatim faults logged by owners on honestjohn.co.uk over recent years. We didn't summarise — these are the words people typed in.

What's good

The Fiat Doblo is a practical large MPV/van offering genuine family or light commercial versatility. Multijet diesel engines are efficient. The 2010 generation improved significantly over the first generation.

Buying or keeping a Doblo?

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 Doblo 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.