Suzuki Swift 1.21.3 Petrol Engine Replacement - Compare Prices & Get Quotes
Get quotes today from trusted UK Suzuki Swift 1.2 and 1.3 petrol engine specialists. Compare prices on reconditioned, rebuilt and used K12B and M13A engines with supply and fit options nationwide.
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From £900 to £1,600
Used from £400 · Reconditioned from £900 · Common codes: K12B, M13A, K12C
From £400
Tested, bare/short engine
From £900
Rod bearings addressed, tested
From quote
Upgraded bearings, full teardown, revised valvetrain
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3 Simple Steps3 Simple Stepsto Finding the Best Suzuki Swift 1.2-1.3 Petrol Replacement Engineto Finding the Best Suzuki Swift 1.2-1.3 Petrol Replacement Engine
Most replacements completed within 3-5 days.
Variant HistorySuzuki Swift 1.2-1.3 Petrol - Engine History & Specs at a Glance
The Suzuki Swift 1.3 M13A engine powered the first two generations of the UK-market Swift (2005-2010), while the 1.2 K12B engine replaced it from 2010 onwards as part of Suzuki's K-series engine family. Together, these naturally aspirated petrol engines represent the vast majority of Swift replacements in the UK, with the K12B becoming the dominant petrol engine from 2010 onwards.
Variant HistorySuzuki Swift 1.2-1.3 Petrol - Engine History & Specs at a Glance
The Suzuki Swift 1.3 M13A engine powered the first two generations of the UK-market Swift (2005-2010), while the 1.2 K12B engine replaced it from 2010 onwards as part of Suzuki's K-series engine family. Together, these naturally aspirated petrol engines represent the vast majority of Swift replacements in the UK, with the K12B becoming the dominant petrol engine from 2010 onwards.
Suzuki Swift 1.2-1.3 Petrol
Fuel TypePetrol (naturally aspirated)
Engine Size Range1.2L (1,242cc) - 1.3L (1,328cc)
Power Output Range86-94hp (63-69kW) across the variant's historyEngine History Timeline
Suzuki Swift Mk2 (MZ/EZ) launched with M13A 1.3-litre petrol engine producing 90-92hp
Swift Sport launched with M16A 1.6-litre engine; M13A continues in standard models
Swift Mk3 (FZ/NZ) launched with new K12B 1.2-litre VVT petrol engine replacing M13A
K12B engine updated with Dualjet technology improving fuel efficiency
Swift Mk4 launched with K12C Dualjet mild hybrid replacing K12B
Swift Sport Boosterjet (K14C) launched as turbocharged performance variant
Key Specs Snapshot
Fuel TypePetrol (naturally aspirated)Engine Size Range1.2L (1,242cc) - 1.3L (1,328cc)Power Output Range86-94hp (63-69kW) across the variant's historyYears Produced2005-2017 (pre-hybrid petrols)Every Suzuki Swift 1.2 and 1.3 petrol engine fitted to UK models is covered below, with UK rebuilt pricing and known failure points.
Suzuki Swift 1.2-1.3 Petrol Engine Codes - Specifications & Replacement CostSuzuki Swift 1.2-1.3 Petrol Engine Codes - Specifications & Replacement Cost
1.3L Petrol (2005-2010)
Power Output90-92hp (66-68kW) at 6,000rpmTorque116Nm at 3,400rpmDisplacement1,328ccYears Fitted2005-2010 (Mk2 Swift, chassis codes ZC11S, ZD11S)
Compatible Trim Levels
- SZ
- SZ-L
- SZ3
- GL
- GLX
- 1.3 S
Find your exact engine code, specs and UK replacement cost guide.
Used
Tested, ready-to-fit engine
£350-£700
Reconditioned
Addressed known issues, tested
£725-£1,200
Rebuilt
Full teardown, upgraded internals
£1,100-£1,600
Common Failure
The M13A is generally reliable but can suffer from coil pack failures causing hesitation and misfires. Head gasket failure is possible on higher-mileage examples, particularly if the engine has overheated. Timing chain stretch can occur beyond 100,000 miles.
The Suzuki Swift 1.2 (K12B) and 1.3 (M13A) petrol engines are generally reliable, but both have well-documented weaknesses. The K12B suffers from timing chain tensioner rattle on K-series engines, while the M13A can experience coil pack failures and head gasket issues. Rebuilt engines through EnginesMarket include upgraded components addressing the original failure points, plus a minimum 12-month unlimited-mileage warranty.
Why the Suzuki Swift K12B Wears Prematurely
Affected Vehicles
Suzuki Swift 1.2 (K12B, 2010-2017)
Typical Failure Mileage
80,000-124,000 miles
Root Cause
The K12B timing chain tensioner is a known weak point on K-series engines. Over time, the tensioner can fail to maintain proper chain tension, leading to chain slap, a metallic rattle on cold start, and potential engine damage if left unaddressed. The chain can stretch and, in worst cases, skip a tooth or break entirely.
Why It Happens
The K12B timing chain tensioner is a known weak point on K-series engines. Over time, the tensioner can fail to maintain proper chain tension, leading to chain slap, a metallic rattle on cold start, and potential engine damage if left unaddressed. The chain can stretch and, in worst cases, skip a tooth or break entirely.
Dealer (parts + labour)
£750-£1,100
Specialist (parts + labour)
£485-£763
What it involves
New timing chain, tensioner, guides, and VVT components
Suitability
Best if caught early (rattle present, no engine damage). Adds 80,000+ miles of life
1 - 2 daysDealer (parts + labour)
£2,500-£4,000
Specialist (parts + labour)
£1,300-£1,800
What it involves
Supply & fit of rebuilt K12B with upgraded timing components, 12-month warranty
Suitability
Recommended if chain has failed and caused valvetrain or piston damage
1 - 2 daysAll prices are indicative UK market ranges based on current UK specialist supplier data.| Repair Tier | Dealer (Parts + Labour) | Specialist (Parts + Labour) | What It Involves | Suitability | Estimated Time |
|---|---|---|---|---|---|
 Timing chain replacement Minor | £750-£1,100 | £485-£763 | New timing chain, tensioner, guides, and VVT components | Best if caught early (rattle present, no engine damage). Adds 80,000+ miles of life | 1 - 2 days |
 Full Replacement - rebuilt/reconditioned engine Best Value | £2,500-£4,000 | £1,300-£1,800 | Supply & fit of rebuilt K12B with upgraded timing components, 12-month warranty | Recommended if chain has failed and caused valvetrain or piston damage | 1 - 2 days |
Vehicle Value Check
Vehicle Value Check
A typical Suzuki Swift 1.2-1.3 petrol (2005-2017) is worth approximately £1,500-£6,000 depending on mileage, condition, and specification. Earlier M13A models (2005-2010) typically range from £1,500-£3,500, while K12B models (2010-2017) range from £2,500-£6,000. - Vehicle worth under ~£2,500: used engine typically makes more sense than a full rebuilt unit. - Vehicle worth ~£2,500-£4,000: evaluate both; reconditioned is viable if keeping the car 2+ years. - Vehicle worth £4,000+: reconditioned/rebuilt usually justifies the premium via warranty and reliability.
Our Recommendation
Our Recommendation
If you hear a rattling noise from the Suzuki Swift K12B engine on cold start, have the timing chain tensioner inspected immediately. Replacement at the first sign of wear is far cheaper than a full engine rebuild - specialist timing chain replacement typically costs £485-£763. With proper servicing (regular oil changes using the correct grade), the chain should last well beyond 100,000 miles. The M13A uses a timing chain as well, but tensioner issues are less frequently reported.
Don't Let Engine Issues Write Off Your Suzuki Swift 1.2-1.3 Petrol
Whether it's timing chain tensioner rattle on the K12B, coil pack or head gasket issues on the M13A, the Suzuki Swift 1.2-1.3 petrol engine range is generally reliable when properly maintained. Every rebuilt unit supplied through EnginesMarket comes with upgraded components addressing the original failure points and a minimum 12-month unlimited-mileage warranty. Compare specialist prices today and save on main dealer costs; supply and fit available nationwide.
Compare rebuilt K12B Suzuki Swift 1.2 petrol engine prices
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Best Price GuidanceImportant Information
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 Suzuki Swift 1.2 or 1.3 petrol engine. Every engine supplied through EnginesMarket carries a minimum 12-month unlimited mileage warranty - always confirm exact terms with your chosen supplier."
Suzuki Swift 1.2-1.3 Petrol Engine ReplacementFrequently Asked Questions
Question 1How much does a Suzuki Swift 1.2 or 1.3 petrol engine replacement cost-
A Suzuki Swift 1.2 (K12B) or 1.3 (M13A) petrol engine replacement typically costs £900-£1,800 for a reconditioned or rebuilt unit with supply and fit through a specialist. Used engines start from around £350-£750, while main dealer replacement can exceed £2,500.
- Rebuilt K12B: £1,300-£1,800 fitted
- Reconditioned M13A: £725-£1,200 fitted
- Used K12B/M13A: £350-£750 (engine only)
- Main dealer: £2,500-£4,000
Question 2What are the signs of timing chain problems in a Suzuki Swift 1.2 K12B-
The most common early warning sign is a rattling or tapping noise from the front of the engine on cold start, indicating timing chain tensioner wear. As the problem worsens, you may notice a check engine light, rough running, or timing correlation fault codes like P0016.
- Cold-start rattle is the #1 warning sign
- Metallic tapping noise from the timing cover
- Check engine light may illuminate with timing codes
Question 3Is it worth replacing the engine in a Suzuki Swift 1.2 or 1.3 petrol-
Yes - if the chassis and body are in good condition, a rebuilt K12B or M13A with upgraded components adds significant value and extends the vehicle's life. Given the vehicle's value (£1,500-£6,000+), replacement cost should be evaluated against the car's condition. For well-maintained examples, a rebuilt engine is a sound investment.
- Rebuilt engine adds significant value to a well-maintained Swift
- 12-month unlimited mileage warranty provides peace of mind
- Upgraded components address original failure points
Question 4How long does a Suzuki Swift 1.2 or 1.3 petrol engine replacement take-
A Suzuki Swift engine replacement typically takes 2-4 days total. This includes 1-2 days for removal and fitting, plus additional time if the replacement engine requires preparation.
- Used engine swap: 1-2 days
- Rebuilt engine supply & fit: 2-3 days
- Allow extra time for delivery if engine needs to be sourced
Question 5What's the difference between the Suzuki Swift 1.2 K12B and 1.3 M13A engines-
The M13A (1.3-litre, 1,328cc, 90-92hp) powered the Mk2 Swift (2005-2010), while the K12B (1.2-litre, 1,242cc, 90-94hp) replaced it in the Mk3 Swift (2010-2017). Both are naturally aspirated petrol engines, but the K12B features VVT and improved fuel efficiency.
- M13A: 1.3L, 1,328cc, 90-92hp, 2005-2010
- K12B: 1.2L, 1,242cc, 90-94hp, 2010-2017
- K12B has VVT and better fuel economy
Question 6Does the Suzuki Swift 1.2 or 1.3 petrol have a timing belt or chain-
Both the Suzuki Swift 1.2 K12B and 1.3 M13A use a timing chain, not a rubber timing belt. The chain is designed for the life of the engine but can stretch or suffer tensioner wear over time, particularly if oil changes have been missed.
- Timing chain, not belt - no routine replacement interval
- Chain stretch possible on high-mileage examples
- K12B tensioner rattle is a known issue
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