VAUXHALL ASTRA 2.0 CDTI SPECIALISTS

Vauxhall Astra 2.0 CDTI Engine ReplacementCompare Prices & Get Quotes

Looking for a Vauxhall Astra 2.0 CDTI engine replacement- Get quotes today from trusted UK Vauxhall Astra 2.0 CDTI engine specialists. Compare prices on reconditioned, rebuilt and used engines for your Astra 2.0 CDTI - whether you need a direct swap or a performance rebuild for your SRi, Elite or GTC variant.

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Vauxhall Astra 2.0 CDTI Engine Replacement engine
Vauxhall Astra 2.0 CDTI

From £1,000 to £2,000

Used from £350 · Reconditioned from £1,000 · Common codes: A20DTH, A20DTR, A20DTJ

Used

From £350

Tested, bare/short engine

Reconditioned

From £1,000

Rod bearings addressed, tested

Rebuilt

From quote

Upgraded bearings, full teardown, revised valvetrain

CDTI
Vauxhall Astra 2.0 CDTI Engine Replacement
UK
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How It Works

3 Simple Stepsto Finding the Best Vauxhall Astra 2.0 CDTI Replacement Engine

12-Month Warranty
Supply & Fit Available
Nationwide Delivery
Trusted UK Suppliers

Most replacements completed within 3-5 days.

Variant History

Vauxhall Astra 2.0 CDTI - Engine History & Specs at a Glance

The Vauxhall Astra 2.0 CDTI first appeared in the Mk5 (H) generation and became a cornerstone of the Mk6 (J) range, offering a robust 2.0-litre common-rail diesel that balanced performance with economy across SRi, Elite, SE and GTC trims.

Vauxhall Astra 2.0 CDTI - Engine History & Specs at a Glance

Vauxhall Astra 2.0 CDTI

Fuel TypeDiesel
Engine Size Range1,956cc (all 2.0 CDTI variants)
Power Output Range148-192bhp across the variant's history

Engine History Timeline

2004

Z20DTJ launched in Astra Mk5 (H) 2.0 CDTI 16v, 148bhp, Euro 4

2008

A20DTH introduced in Mk5 facelift 158bhp, Euro 5 with DPF

2010

A20DTH continues into Mk6 (J) Astra 162bhp and 165bhp variants

2012

A20DTR Bi-Turbo arrives 192bhp, fitted to GTC and high-output Astra models

2016

Mk6 2.0 CDTI production ends; replaced by 1.6 CDTI and 1.5 diesel units in Mk7

Key Specs Snapshot

Fuel TypeDiesel
Engine Size Range1,956cc (all 2.0 CDTI variants)
Power Output Range148-192bhp across the variant's history
Years Produced2004-2016

Every engine fitted to the Vauxhall Astra 2.0 CDTI is covered below, with UK rebuilt pricing and known failure points.

Engine Codes & Pricing

Vauxhall Astra 2.0 CDTI Engine Codes - Specifications & Replacement Cost

A20DTH

2.0 CDTI 16v (2008-2015)

Power Output158-165bhp
Years Fitted2008-2015

Compatible Trim Levels

  • Astra SRi
  • Astra Elite
  • Astra SE
  • Astra Tech Line
  • Astra GTC Sport
  • Astra ecoFLEX
A20DTH engine
A20DTH quote
Get quotes for A20DTH

Vauxhall Astra 2.0 CDTI engine replacement

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Cost Guide

Find your exact engine code, specs and UK replacement cost guide.

Used

Tested, ready-to-fit engine

£350-£800

Reconditioned

Addressed known issues, tested

£1,000-£2,000

Rebuilt

Full teardown, upgraded internals

£1,800-£3,000

Common Failure

Timing belt and water pump require replacement at 100,000 miles or 10 years - the A20DTH uses a belt-driven camshaft and water pump, not a chain. Injector seal leaks (sooting around injectors) and DPF/EGR clogging are also widely reported.

Early diagnosis is recommended if symptoms appear, especially on higher-mileage examples where damage can escalate quickly.
Bearing damage
Common Problems
Vauxhall Astra 2.0 CDTI Engine Problems - Repair Cost vs Replacement

The Vauxhall Astra 2.0 CDTI is a widely respected diesel workhorse, but it has a few well-documented failure points. The A20DTH and related codes use a timing belt rather than a chain - an important distinction from many modern diesels. DPF and EGR systems are the primary sources of running issues, while injector seal failure and fuel system contamination are also common. Rebuilt engines through EnginesMarket include upgraded components addressing the original failure point, plus a minimum 12-month unlimited-mileage warranty.

Timing Belt & Water Pump Failure
Timing Belt & Water Pump Failure

Why the Vauxhall Astra 2.0 CDTI Needs Regular Belt Changes

Affected Vehicles

Vauxhall Astra 2.0 CDTI (A20DTH, A20DTR, A20DTJ, 2004-2016)

Typical Failure Mileage

80,000-120,000 miles

Root Cause

The 2.0 CDTI uses a timing belt, not a chain. Belts degrade over time and can snap, causing catastrophic valve and piston damage. The water pump is driven by the same belt - if it seizes, the belt can fail prematurely.

Why It Happens

The 2.0 CDTI uses a timing belt, not a chain. Belts degrade over time and can snap, causing catastrophic valve and piston damage. The water pump is driven by the same belt - if it seizes, the belt can fail prematurely.

Repair Options & Estimated Costs (UK Ranges)
Preventative - timing belt & water pump replacement

Dealer (parts + labour)

£500-£800

Specialist (parts + labour)

£350-£550

What it involves

New timing belt kit, tensioner, idler and water pump

Suitability

Essential every 100k miles or 10 years - prevention is far cheaper than repair

1 - 2 days
Full Replacement - rebuilt/reconditioned engine

Dealer (parts + labour)

£2,500-£4,500

Specialist (parts + labour)

£1,800-£3,000

What it involves

Supply & fit, upgraded components, 12-month warranty

Suitability

If belt has snapped causing internal damage - replacement is often cheaper than a full rebuild

1 - 2 days
All prices are indicative UK market ranges based on current UK specialist supplier data.

Vehicle Value Check

A typical Vauxhall Astra 2.0 CDTI (Mk6, 2009-2015) is worth approximately £2,000-£8,000 depending on mileage, condition and trim. For Astra 2.0 CDTI examples valued under £4,000, a preventative belt change (£350-£550) is strongly recommended; if the belt has snapped, full replacement cost (£1,800-£3,000) may approach 50-70% of vehicle value - evaluate whether a used engine (£350-£800) offers better value than a reconditioned unit on lower-value cars.

Our Recommendation

If you own a Vauxhall Astra 2.0 CDTI approaching 100,000 miles and you've not changed the timing belt and water pump, do it now. Prevention costs £350-£550 at an independent specialist - a snapped belt will cost £1,800+ for a replacement engine. If you're already hearing rattling or have experienced a failure, compare rebuilt versus used pricing carefully; for higher-value examples (£4,000+), the 12-month warranty on a reconditioned unit often justifies the premium.

Don't Let Engine Failure Write Off Your Vauxhall Astra 2.0 CDTI

Whether your Astra 2.0 CDTI has suffered a snapped timing belt, blocked DPF, failing injectors or turbo issues, a replacement engine can give it a new lease of life. Every rebuilt engine through EnginesMarket carries a minimum 12-month unlimited-mileage warranty and is supplied with upgraded components addressing the original failure points. Compare quotes from our UK-wide network of Vauxhall Astra 2.0 CDTI specialists today - and avoid main dealer premiums.

Compare rebuilt A20DTH Vauxhall Astra 2.0 CDTI engine prices

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Important Information

"All prices are indicative UK market ranges based on historical quote data and repair requests from our network of engine specialists. Dealer pricing is estimated based on published main dealer labour rates and genuine OEM parts pricing. Specialist pricing reflects actual quote data from EnginesMarket's UK network. Actual costs vary depending on damage severity, vehicle condition, variant, and workshop location within the UK. Use our free comparison tool to get tailored quotes for your specific Vauxhall Astra 2.0 CDTI. Every engine supplied through EnginesMarket carries a minimum 12-month unlimited mileage warranty - always confirm exact terms with your chosen supplier."

FAQ

Vauxhall Astra 2.0 CDTI Engine ReplacementFrequently Asked Questions

How much does a Vauxhall Astra 2.0 CDTI engine replacement cost-

A Vauxhall Astra 2.0 CDTI engine replacement typically costs £1,000-£3,000 for a reconditioned unit supply-only, with used engines from £350-£800. Fitting adds approximately £455-£650 in labour (7-10 hours at indie rates). Main dealer prices are typically 30-50% higher. The exact cost depends on your engine code (A20DTH, A20DTR or A20DTJ) and the extent of any auxiliary damage.

  • Used A20DTH engine: £350-£800
  • Reconditioned A20DTH: £1,000-£2,000
  • Supply & fit: £1,500-£3,000+ depending on condition
-> Get your free Vauxhall Astra 2.0 CDTI engine quote now

What are the signs of timing belt failure in a Vauxhall Astra 2.0 CDTI-

The 2.0 CDTI uses a timing belt, not a chain. Warning signs include a rattling or slapping noise from the front of the engine, particularly on cold start, or a ticking noise that increases with engine speed. If the belt snaps, the engine will cut out immediately - and because the 2.0 CDTI is an interference engine, valves will strike pistons, causing catastrophic internal damage.

  • Listen for unusual noises from the timing cover area
  • Check service history - belt and water pump should be changed every 100k miles or 10 years
  • If the belt snaps, do not try to restart - you'll cause more damage
  • Replacement engine cost: £1,800-£3,000 fitted
-> Compare Vauxhall Astra 2.0 CDTI timing belt replacement vs engine replacement costs

Is it worth replacing the engine in a Vauxhall Astra 2.0 CDTI-

It depends on your Astra 2.0 CDTI's overall condition and value. A Vauxhall Astra 2.0 CDTI (Mk6, 2009-2015) is typically worth £2,000-£8,000. A reconditioned engine supply and fit costs £1,800-£3,000. For an Astra 2.0 CDTI worth over £4,000, replacement is usually worthwhile, especially with a 12-month warranty. For Astra 2.0 CDTI examples under £2,000, a used engine (£350-£800) or scrapping may be more economical.

  • Vehicle worth £4,000+: reconditioned replacement makes financial sense
  • Vehicle worth £2,000-£4,000: compare used vs reconditioned carefully
  • Vehicle worth under £2,000: evaluate scrap value first
-> Get a free Vauxhall Astra 2.0 CDTI replacement value assessment

How long does a Vauxhall Astra 2.0 CDTI engine replacement take-

A Vauxhall Astra 2.0 CDTI engine replacement typically takes 7-10 hours of labour at an independent specialist. Allow 2-3 working days for the full supply-and-fit process, including delivery of the replacement unit. Main dealers may take longer due to scheduling. Some specialists offer express fitting - ask when you get your quote.

  • 7-10 hours labour at £65/hr indie rates
  • Supply & fit typically completed within 3 working days
  • Mobile fitting is not recommended for engine swaps - use a workshop with proper equipment
-> Find Vauxhall Astra 2.0 CDTI engine fitting specialists near you

What's the difference between the A20DTH and A20DTR engines in the Vauxhall Astra-

Both are 2.0 CDTI diesel engines from the same family, but the A20DTR is a Bi-Turbo variant producing 192bhp, while the A20DTH produces 158-165bhp. The A20DTR was fitted to the Astra GTC and high-output Astra models from 2012. Both share the same 1,956cc displacement and timing belt system, but the A20DTR's twin-turbo setup adds complexity and cost if repairs are needed.

  • A20DTH: 158-165bhp, single turbo, 2008-2015
  • A20DTR: 192bhp, Bi-Turbo, 2012-2016
  • A20DTR replacement parts are typically more expensive
-> Check your Vauxhall Astra 2.0 CDTI engine code with your registration

Does a replacement Vauxhall Astra 2.0 CDTI engine come with a warranty-

Yes. Every rebuilt Vauxhall Astra 2.0 CDTI engine supplied through EnginesMarket carries a minimum 12-month unlimited-mileage warranty. Used engines typically come with a shorter warranty (30-90 days) depending on the supplier - always confirm the warranty terms before purchasing. Reconditioned engines also include upgraded components where applicable, addressing the original failure points.

  • Rebuilt engines: 12-month unlimited-mileage warranty minimum
  • Reconditioned engines: 12-month warranty typical
  • Used engines: 30-90 day warranty (check with supplier)
-> Compare Vauxhall Astra 2.0 CDTI engine warranty options
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1,000+ Astra engines supplied through our network

12-Month Warranty on every rebuilt Astra 2.0 CDTI engine

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Comparing quotes for your Vauxhall Astra 2.0 CDTI engine replacement is completely free and carries no obligation. Our UK-wide network of vetted Vauxhall Astra 2.0 CDTI specialists will provide transparent, itemised pricing for used, reconditioned and rebuilt engines matched to your exact engine code - whether you need an A20DTH, A20DTR or A20DTJ. Enter your registration above and get quotes tailored to your Astra 2.0 CDTI today.

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