Insignia vs Mondeo, The D-Segment Endgame
The Vauxhall Insignia and Ford Mondeo are both gone from new-car showrooms, but they are not gone from the used market. These are the last ordinary big hatchback and saloon choices for buyers who do not want an SUV, and the 2024 public UK MOT record gives the Insignia the cleaner headline result.
The Insignia recorded
That puts the Insignia
The Mondeo has a serious defence: its average mileage at test is much higher. These cars were motorway tools, taxi-adjacent workhorses, rep-mobiles, family barges and private buys kept running long after the market moved on. The MOT record does not tell you which one has the better seat, gearbox or boot shape. It tells you which one turns up for the test with fewer roadworthiness problems.
That is why this comparison matters. A cheap big car can look like a bargain until tyres, suspension, brakes, lamps and diesel emissions start arriving together.
Pass-Rate Split
The Insignia wins the headline split: 74.91% against 73.23%. Across 728,084 recorded tests, that is enough to call a result.
The Vauxhall also has the slightly larger sample. Not by much, but enough to remove the idea that the Insignia is being flattered by a small, cherished fleet. These are high-volume records for discontinued big cars, and both numbers have had plenty of opportunity to absorb rough examples.
The Mondeo’s 73.23% pass rate is not poor. It is still a respectable result for an ageing D-segment car with a long production tail and a lot of hard-working diesel examples. The problem for Ford is that the Insignia is also old, also diesel-heavy, also used hard, and still clears the first test more often.
Fuel mix does not give either side a clean escape route. The Insignia record is heavily diesel-led: 307,998 diesel tests against 65,008 petrol. The Mondeo is also diesel-led, with 278,806 diesel tests and 70,250 petrol, plus a small hybrid and electric presence. So this is not a petrol fleet beating a diesel fleet. It is mostly diesel versus mostly diesel.
For a buyer, the pass-rate lead should sit behind condition but ahead of pub opinion. If two cars are equal on price, age, mileage, service evidence and MOT history, start with the Insignia. If the Mondeo has cleaner individual paperwork, better tyres and fewer repeat advisories, buy the Ford without feeling disloyal to the data.
The important part is that neither badge is magic now. These cars are old enough for care, use and previous owners to matter more than brochures.
Where They Fail
The Insignia’s top failure reasons are familiar big-car wear items:
- Rear registration plate lamp or light source missing or inoperative: 17,499
- Spring or spring component fractured or seriously weakened: 14,771
- Tyre tread depth below the requirement: 11,918
- Windscreen or window damaged or seriously discoloured: 9,372
- Brake lining or pad worn below 1.5mm: 9,295
That list has two personalities. The number-plate lamp and windscreen entries are small-stuff failures: easy to miss, cheap to fix, irritating when they repeat. The spring, tyre and brake entries are the real buying signals. They point to weight, mileage, potholes, budget tyres and owners pushing maintenance too close to the test date.
The Mondeo’s top five are similar, but the suspension warning is sharper:
- Rear registration plate lamp or light source missing or inoperative: 16,180
- Tyre tread depth below the requirement: 9,513
- Suspension pin, bush or joint excessively worn: 8,390
- Windscreen or window damaged or seriously discoloured: 8,331
- Brake lining or pad worn below 1.5mm: 7,123
The Ford’s third-place suspension pin, bush or joint failure is the line to circle. Mondeos are good at soaking up miles, but the record says worn joints and bushes need a proper look. Add tyre failures and visible cord entries further down the list, and the buyer check becomes obvious: front end, rear bushes, tyre shoulders, alignment clues.
The Insignia’s failure pattern is not clean. It just looks slightly less costly at first glance. Lamps, tyres, windscreen damage and pads are easier to price than deeper suspension wear. Springs can still bite hard, especially when one fresh spring is hiding three old ones.
The Mondeo asks for the same basic checks, then a more suspicious suspension inspection. Do not buy one because it rides well on a smooth test route. Drive it slowly over broken surfaces, brake lightly, listen for knocks, and check whether the MOT history has been carrying joint, bush, tyre or lamp advisories year after year.
Cohort Tells
The all-age result gives the Insignia the verdict, but the cohort split is where the Mondeo pushes back.
In the pre-2018 band, which is where most affordable examples now live, the Insignia recorded 342,764 tests and passed at 74.06%. The Mondeo recorded 335,620 tests and passed at 72.43%. That is the key Insignia win. It leads by 1.63 points in the oldest, biggest and most relevant cohort.
That matters more than the newer buckets because cheap big cars are mostly older cars. A 2015 or 2016 Insignia is exactly the kind of thing a buyer chooses because estates and saloons give more car for less money than crossovers. In that part of the market, the Vauxhall has the stronger public record.
The 2018-2020 band flips the story. Insignia passes at 84.65% from 29,433 tests. Mondeo passes at 87.24% from 17,633 tests. That is a clear Ford win. If you are shopping a later Mondeo against a later Insignia, the Ford has the neater cohort result.
The newest 2021-on bucket also favours the Mondeo: 84.98% from 1,791 tests versus 80.07% from just 843 Insignia tests. But that bucket is small for both cars, and it is a strange corner of the comparison because both models were near the end of their UK lives. Newer examples are useful to see, but they should not dominate the verdict.
The fair read is this: the Insignia wins where the used market is thickest. The Mondeo looks stronger among later cars. That makes the buying advice split by age.
If you are buying a cheap older one, the Insignia is the better percentage play. If you are paying more for a late car, the Mondeo deserves a serious look, especially if its history is clean and its suspension has evidence of recent work.
Mileage Tells
Mileage is the Mondeo’s best argument.
The Insignia average mileage at test is 101,470. The Mondeo average is 116,723. That is a 15,253-mile gap in the Ford’s disfavour. The Mondeo loses the headline pass-rate fight while turning up with far more miles on the clock. That softens the defeat.
The older cohort shows the same pattern. Pre-2018 Insignias average 105,204 miles at test. Pre-2018 Mondeos average 119,948. The Vauxhall passes at 74.06%, the Ford at 72.43%. So the Insignia wins the old-car pass rate, but the Mondeo is carrying nearly 14,744 more miles in that same broad band.
That is not a reason to ignore the result. It is a reason to read it properly. The Insignia is statistically cleaner. The Mondeo may be surviving harder use.
In the 2018-2020 band, the Mondeo again carries more mileage and still wins. Insignia tests average 59,805 miles and pass at 84.65%. Mondeo tests average 63,406 miles and pass at 87.24%. That is the Ford’s strongest evidence in the whole comparison. Later Mondeos look robust in the record, even with more distance under them.
The newest bucket is messier. Insignias average 44,924 miles and pass at 80.07%. Mondeos average 40,571 miles and pass at 84.98%. The Ford is lower mileage and better on pass rate, but both samples are small enough that a few ownership patterns can push the result around.
The Insignia wins the MOT percentage. The Mondeo wins the mileage argument more often than Ford fans might expect.
That is the whole shape of this duel. The Vauxhall is the better default if you are choosing from the main used pool. The Ford becomes more persuasive when the individual example has been maintained properly, especially in later years.
The Numbers We Trust
This comparison uses 2024 official UK records for vauxhall__insignia and ford__mondeo.
The combined sample is 728,084 recorded tests. The Insignia contributes 373,040. The Mondeo contributes 355,044. Those are proper samples for two discontinued D-segment cars, and they make this more than a badge argument.
The record is still a roadworthiness record, not a full ownership-cost ledger. It sees tyres, brakes, lamps, suspension, steering, structure, visibility, emissions and safety-related failures. It does not see every clutch bill, turbo failure, wet boot, infotainment problem, timing issue or gearbox complaint.
It also counts tests, not unique cars. A vehicle can appear again if it fails, gets repaired and returns. That is normal for this kind of record, but it means test count is recorded test activity rather than a clean parc count.
The by-year-band split is broad. It groups cars by first-use date, not engine, trim, body style, private use, fleet use or service quality. A cherished petrol hatch, an ex-company diesel estate and a tired high-mile saloon can sit under the same model slug.
Those limits do not ruin the comparison. They tell you how to use it. The Insignia has the higher 2024 first-time pass rate and the stronger pre-2018 cohort. The Mondeo has higher average mileage and wins the 2018-2020 and 2021-on cohorts.
For buying, the inspection list is plain.
On the Insignia, check rear number-plate lamps, springs, tyres, windscreen damage and brake pad condition. Look for repeat spring advisories and tyres worn to the edge. A cheap Insignia can be very good value, but only if it has not been maintained by annual panic.
On the Mondeo, check rear number-plate lamps, tyre tread, suspension bushes and joints, windscreen damage and brake pads. Spend real time under the car. The Ford’s miles are its honour badge and its warning label.
The D-segment saloon and hatchback market is not coming back in the same shape. That makes the remaining good cars worth finding properly. A clean Insignia gives you space, comfort and a better headline MOT record. A clean Mondeo gives you mileage toughness and a late-cohort case that should not be dismissed.
The mistake is buying either one as a bargain barge without reading the history. These cars are now old enough that deferred maintenance is the whole game.
Verdict
The Mondeo keeps this close. It carries much higher average mileage at test and looks stronger among 2018-2020 cars, so a clean later Mondeo can absolutely be the smarter buy. But on equal age, condition, price and history, start with the Insignia. It has the cleaner 2024 MOT pattern in the part of the used market that matters most.