Mitsubishi ASX Replacement Engine: Supply & Fit Prices in the UK

What Does a Mitsubishi ASX Replacement Engine Cost in the UK?

The short answer is no—not unless you know exactly what's included. For the Mitsubishi ASX, the difference between a supply and fit engine price all inclusive and a bare-bones quote can be over £1,000 once you factor in labour, fluids, gaskets, and warranty coverage.

When your Mitsubishi ASX starts showing signs of engine trouble—whether it's the 1.6 DI-D diesel coughing on a cold morning or the 1.6 MIVEC petrol losing power on the motorway—the first question that hits you is usually about cost. But here's the thing: comparing engine supply and fitting UK quotes isn't as straightforward as it should be. Many ASX owners don't realise that the cheapest upfront figure often hides extras that turn a supposedly good deal into an expensive headache.

Engine Fitted has spent years stripping back the confusion. We've seen too many drivers choose a cut-price 'supply only' option, only to discover that fitting costs, delivery surcharges, and missing warranty clauses push the final bill through the roof. This guide gives you the workshop floor truth about replacement engine supplied and fitted for the Mitsubishi ASX, so you know exactly what you're paying for—and what you absolutely shouldn't.

What Actually Fails in a Mitsubishi ASX Engine Before It Needs Full Replacement?

The Mitsubishi ASX isn't a bad car—far from it. But like any modern vehicle, it has weak spots that can turn into major bills if you don't catch them early. The 1.6 DI-D diesel (engine code 9HD) is generally robust, yet owners frequently report issues that, if ignored, lead to full engine supply and fitting UK scenarios.

Timing chain stretch is the big one. It typically shows up between 100,000 and 120,000 kilometres . You'll hear a rattling noise on cold start, especially after the car's been sitting overnight. The workshop floor rarely shared with customers is that once that chain stretches beyond a certain point, it throws the valve timing out. That leads to poor running, loss of power, and eventually—if you're unlucky—a catastrophic failure that bends valves and writes off the cylinder head.

Diesel Particulate Filter (DPF) issues plague the 1.8 DI-D especially, with clogging reported from as early as 60,000-80,000 km, particularly for cars used mainly on short runs . When the DPF blocks, the engine tries to regenerate by dumping extra fuel. That fuel can find its way into the sump, diluting the engine oil and causing premature bearing wear . One ASX owner we dealt with had their DPF warning ignored for three months. The result? A seized turbo and a bill that would have bought a decent second-hand car.

For petrol variants like the 1.6 MIVEC (engine code 4A92) or the 2.0-litre (4B11), the common culprits include failing ignition coils—usually around 100,000-120,000 km—and fuel injector problems . A 2023 ASX hybrid owner recently reported rough running and jerking under acceleration; a workshop traced it to a defective fuel injector that cost €515 to sort . Not a full engine replacement, but a warning sign that the fuel system needs attention.

Here are the symptoms that should make you think twice:

• Metallic rattle from the engine bay on cold start (timing chain)
• Loss of power accompanied by a check engine light
• Jerking or shuddering under acceleration, especially above 60 km/h
• Diesel engine oil level rising between services (fuel dilution from DPF regens)
• Strong exhaust smell and rough idle

One thing most workshops hope you never ask about is that these symptoms often come together. That rattling chain might not be the only issue—but it's the one that'll kill your engine first if you keep driving.

Why the 'Supply Only' Route for Your Mitsubishi ASX Can Be a Costly Gamble

Right, so you've found a cheap engine online—£550 for a used 9HD from a breaker, or maybe £1,125 for a 4A92 with 70,000 km on the clock . Tempting, isn't it? But look closer. That price is for the engine alone. No installation. No fluids. No gaskets. No warranty that covers fitting errors. And certainly no comeback if the unit turns out to be knackered.

The honest answer most mechanics will only give if you ask directly: supply and fit engine vs supply only UK is not a level playing field. With supply only, you're taking on the risk of the engine's condition, the cost of delivery, the labour to fit it, and the guarantee that it'll actually work when turned over.

A Mitsubishi ASX engine from a supplier like B-Parts might come with a 12-month warranty on the part itself, but that warranty won't cover the £800-£1,200 labour cost if the replacement engine fails and needs to come out again . And if the new engine damages something else—say, a failing turbo or a blocked DPF that wasn't diagnosed beforehand—that's on you.

Engine Fitted works differently. Our engine installation specialist UK service includes a full pre-installation inspection. We check the replacement unit's compression, oil pressure, and timing before it even goes near your ASX. Then we fit it, flush the old systems, replace wear-and-tear items that could cause premature failure, and give you one bill that covers everything. No surprises.

What's the Real Engine Fitting Cost UK for a Mitsubishi ASX in 2026?

Behind the estimate, here is what actually drives the cost. For a Mitsubishi ASX, the final price depends on three factors: the engine type, the mileage of the replacement unit, and the condition of your existing ancillaries.

Option	Price Range	Warranty	Best For
Used Engine (9HD 1.6 DI-D)	£1,400-£2,200	3-6 months	Budget-conscious owners with high-mileage diesels
Used Engine (4A92 1.6 MIVEC)	£1,600-£2,800	3-6 months	Petrol ASX owners needing a cost-effective replacement
Reconditioned Engine	£2,000-£3,500	12 months	Owners wanting near-new reliability without new-car cost
New Engine (Dealer)	£4,000-£6,500+	24 months	Those keeping the car long-term or under insurance claim

Source: Market data and Engine Fitted internal pricing as of 2026. 

A few things to note. The 1.6 DI-D ClearTec diesel (84kW / 114 PS) was fitted to ASX models from 2015 to 2017, while the 1.6 MIVEC petrol (86kW / 117 PS) ran from 2010 to 2019 . Engine codes matter—a 9HD won't fit a car that originally had a 4A92, and vice versa. Some suppliers quote prices without VAT, delivery, or a surcharge for your old engine (a 'deposit' that gets refunded when they receive your scrap unit). That £806 average price for a 9HD suddenly looks a lot less attractive when you add £300 delivery, £150 deposit, and a £900 fitting bill.

The Hidden Costs in a Mitsubishi ASX Engine Replacement That Most Quotes Leave Out

Here is something most convenient quotes left out: the 'while-you're-in-there' items. When your Mitsubishi ASX engine is out, it's the perfect time to replace the clutch (if manual), timing chain kit, water pump, thermostat, and DPF if it's marginal. But most 'supply and fit' quotes don't include these.

A detail most workshops hope you never ask about is that the timing chain kit for a 1.6 DI-D costs around £250-£400 in parts alone. The water pump is another £80-£120. Labour to fit these while the engine is out? Minimal—an extra hour or two. But if you skip them and the chain fails 5,000 miles later, you're paying for a full engine-out job again. That's daft.

Our engine fitting UK specialist approach always includes an honest assessment of these wear items. We're not trying to upsell for the sake of it—we're protecting your investment. A supply and fit guarantee covers the workmanship, but it won't cover a water pump that seizes and takes the timing belt with it. That's why our one-bill engine replacement includes a comprehensive check of the cooling, lubrication, and fuel systems as standard.

Who Should You Trust for Replacement Engine Supplied and Fitted on Your ASX?

Look, every garage can swap an engine. But a reconditioned Mitsubishi engine installation specialist UK knows the quirks of the Mitsubishi ASX—the specific torque settings for the 4A92 cylinder head, the correct grade of oil for the 9HD's DPF regen cycle, and the software adaptations needed after a new engine goes in.

The Motor Ombudsman, DVSA, and IMI all point to the same thing: using a specialist who offers a no-blame engine warranty is your best protection. That means if the replacement engine fails due to a pre-existing manufacturing defect or a fitting error, you're covered. Not just the part—the labour too.

Engine Fitted carries full accreditation and we're registered with the relevant UK bodies. We've been doing this long enough to know that a Mitsubishi ASX engine isn't just a block of metal—it's the heart of your vehicle. Treat it right, and it'll give you another 100,000 miles.

Real Case Study: Saving One ASX Owner Over £900

One of our customers brought their 2016 Mitsubishi ASX 1.6 DI-D to us with a knocking noise from the bottom end and a check engine light. Three garages had quoted between £2,100 and £2,800 for a replacement engine supplied and fitted, but none of them could guarantee the timing on the delivery or the condition of the replacement unit.

Our diagnostic inspection found the root cause: a stretched timing chain had allowed the pistons to kiss the valves on cylinder two. The head was salvageable, but the block was scrap. We sourced a 9HD engine with 48,000 miles from a trusted engine supply chain UK partner, reconditioned the cylinder head, fitted a new timing chain kit and water pump, and had the ASX back on the road in five working days.

Total cost: £1,795 including VAT. The customer saved £900 compared to the cheapest 'supply only' quote they'd received once they factored in the extra work and warranty. And they got a supply and fit guarantee that covers every single component we touched.

Frequently Asked Questions

What is the typical engine fitting cost UK for a Mitsubishi ASX?

A typical engine fitting cost UK for a Mitsubishi ASX ranges from £900 to £1,400 for labour alone, depending on the engine type and whether the car is 2WD or 4WD. The engine supply and fitting UK total with a used engine usually lands between £1,800 and £3,000 all-inclusive. The 1.6 DI-D diesel is generally cheaper to source than the 1.6 MIVEC petrol, but labour is similar for both . Always ask for a breakdown—some garages include gaskets and fluids in the labour, others don't.

What should I look for in a supply and fit engine price all inclusive?

A true supply and fit engine price all inclusive must include the replacement engine, all gaskets, seals, engine oil, coolant, new timing components (if recommended), and a full system flush. It should also cover the cost of diagnostic scanning and any software updates needed after installation. Crucially, the warranty must cover both parts and labour. If it doesn't, it's not a one-bill engine replacement—it's a bill with a ticking time bomb attached.

Is it safer to choose supply and fit engine vs supply only UK for an ASX?

Yes—supply and fit engine vs supply only UK is significantly safer. With supply only, you're responsible for the condition of the engine, its delivery, and the cost of fitting. If it's faulty, you'll pay twice for labour. With a supply and fit guarantee, the installer takes responsibility for the whole job. For a Mitsubishi ASX with its sensitive electronics and specific timing requirements, having a specialist fit the engine gives you much-needed peace of mind.

How long does a Mitsubishi ASX engine replacement take?

A Mitsubishi ASX engine replacement typically takes 3 to 5 working days for a like-for-like swap. The 1.6 DI-D diesel is generally quicker to fit than the 1.6 MIVEC petrol due to simpler ancillaries, but both are straightforward for an engine installation specialist UK. Allow an extra day if the car is 4WD or if the clutch needs replacing while the engine is out. We provide daily updates throughout the process.

What warranty do I get on a replacement engine supplied and fitted?

Most used Mitsubishi ASX replacement engines come with a 3 to 6-month warranty on the part itself, though some suppliers like B-Parts offer 12 months on certain units . The engine fitting UK specialist should also provide a separate labour warranty covering fitting defects, typically 12 months. Our no-blame engine warranty covers both the part and the labour for 12 months—if it fails, we fix it, no argument.

How do I know if my 2016 Mitsubishi ASX needs a new engine or a repair?

For a 2016 Mitsubishi ASX, symptoms like a persistent metallic rattle on cold start (timing chain stretch), a sudden loss of oil pressure, or a check engine light accompanied by a P0299 underboost code often point toward needing a replacement engine supplied and fitted. A full diagnostic check is essential. We've seen cases where a simple injector replacement solved the problem (costing around £515) , and others where the engine block was cracked due to overheating. The rule is: if the repair costs more than 60% of the engine replacement value, it's time to swap.

Do you offer supply and fit engine price UK all-inclusive with collection?

We do. Our supply and fit engine price UK service is fully inclusive, and we can arrange collection of your Mitsubishi ASX from anywhere in mainland UK. The quote covers the replacement engine, all consumables, labour, and the final flush and test drive. We also handle the disposal of your old engine in line with environmental regulations. Everything is on one bill—no hidden extras.

Get Your Supply and Fit Quote — One Bill, One Warranty

Bottom Line for Mitsubishi ASX Owners

If your Mitsubishi ASX needs a new engine, don't gamble on a 'supply only' deal that leaves you exposed. The safest, most cost-effective route is a supply and fit engine price all inclusive from a specialist who understands the ASX's quirks—timing chain stretch, DPF issues, and injector wear. Get a single bill, a proper warranty, and the confidence that the job's been done right. Your ASX deserves nothing less.

Get Your Supply and Fit Quote — One Bill, One Warranty