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Rover 45 problems (1999–2005)

The only engine of the Rover 45 that we have documented, the Rover K-Series, has high or critical severity faults in the versions it is fitted to. Our verdict for the versions it is fitted to: «With caution».[1][2][3]

Outside the engine: Outside the engine, the Rover 45 suffers mainly from corrosion and wear on cars over 20 years old: rusted suspension mounts and underbody, torn driveshaft gaiters and small plastic and electrical parts. There are no documented recalls and all the sources are British.[4][5]

Rover 45 (1999–2005)
Photo: Autor desconocido · CC BY-SA 3.0 · Wikimedia Commons. Reference image for this generation.
02468106.4out of 10

Rover 45 rating: acceptable reliability

Calculated using only 7 documented faults and their sources: the most serious and frequent faults weigh more. Limited evidence: it is based on few sources or few documented faults, so it is not included in the rankings. Having few documented faults does not mean it is reliable: it may simply be little studied. How it is calculated

  • Engine5.43 faults
  • Gearbox9.31 fault
  • Suspension8.4Technical inspection (ITV) only: 0.6 times the defects normal for its age
  • Brakes7.5Technical inspection (ITV) only: 1.0 times the defects normal for its age
  • Tyres and wheels10.0No documented faults
  • Steering7.8Technical inspection (ITV) only: 0.9 times the defects normal for its age
  • Electrical system10.0No documented faults
  • Headlights and lights7.8Technical inspection (ITV) only: 0.9 times the defects normal for its age
  • Electronics and infotainment10.0No documented faults
  • Climate control9.31 fault
  • Bodywork and interior7.22 faults and ITV (technical inspection)
  • Airbags and safety10.0No documented faults

The weak points of the Rover 45

  1. 1High severity: Head gasket failureRover K-Series engine
  2. 2High severity: Sunken cylinder liners and warped head after overheatingRover K-Series engine
  3. 3Medium severity: Corrosion of suspension mounts and underbodyBodywork and interior
  4. 4Medium severity: Coolant leaks: expansion tank cap, rear block rail and hosesRover K-Series engine
  5. 5Low severity: Driveshaft gaiters torn or looseGearbox and clutch

Documented engine

The first label is the most serious fault affecting that engine in this car; the second, our verdict for the versions it is fitted to. Each engine's risk index is calculated only from the faults that affect this car (how we calculate it). We only show engines we have documented with sources: if yours does not appear, we have not analysed it yet. View all engines

See what to check before buying

Outside the engine

9 sourcesHow we work

Rover K-Series

Rover / MG K-Series (1.1, 1.4, 1.6 and 1.8 16V, incluido el 1.8 VVC) · Petrol

In the 45
1999–2005[6]
Names
45 1.4 · 45 1.6 · 45 1.8
Faults that affect it
3 · 2 of high or critical severity
Risk index on this car
46
Moderate risk

Verdict for the versions it uses

  • 1.4 8V/16V 74-103 hp (14K2F / 14K4F, 1995-2005)1995–2005 · 74–103 hp · 14K2F, 14K4F

    With caution

    Technical sources describe the head failure mainly on the 1.8, but Diariomotor speaks of "all K-Series"; it is worth buying if the coolant has been looked after and there are no signs of overheating.[1][2]

  • 1.6 16V 109-116 hp (16K4F, 1995-2005)1995–2005 · 109–116 hp · 16K4F

    With caution

    This is one of the versions where technical sources place the change to "damp" liners, with less coolant between cylinders; Diariomotor recommends checking whether the gasket is already the reinforced one.[1][2]

  • 1.8 16V 117-136 hp (18K4F, 1995-2005)1995–2005 · 117–136 hp · 18K4F

    With caution

    This is the version most cited in head gasket failures; it is worth buying if it already has the multi-layer (MLS) gasket with the liners measured, and Diariomotor considers its absence a good argument for negotiating the price.[1][2][3]

Faults that affect the 45

  1. High severityFrequency: CommonCylinder head and blockHead gasket failureThe K-Series' big problem is the head gasket, which can fail even below 100,000 km because of a mix of gasket design, cooling and overheating. The usual repair uses the multi-layer steel (MLS) gasket that was developed for the Freelander.
  2. High severityFrequency: OccasionalCylinder head and blockSunken cylinder liners and warped head after overheatingAfter overheating, the K-Series liners can end up below the surface of the block and the aluminium head can be marked or warped; then no gasket seals properly and the liner height has to be measured and restored.
  3. Medium severityFrequency: OccasionalCoolingCoolant leaks: expansion tank cap, rear block rail and hosesThe K-Series circuit holds about 5.5 litres, so a slow leak empties the expansion tank and causes localised overheating. The points cited are the tank cap, the metal rail at the rear of the block (corrosion), the hoses and the coolant passages of the inlet manifold gasket.

45 Rover K-Series pageAll versions and faults of the Rover K-Series

Faults of the Rover 45 outside the engine

Suspension, brakes, tyres, electronics and the rest of the car. They occur with any engine.

What the MOT inspection finds on the Rover 45

Official Dutch MOT (APK) inspection data: 480 inspections of 209 cars registered between 1999 and 2005, compared with cars of the same age.

  • Suspension and axles· counts in the score

    Defects in 5.8% of inspections; in cars of its age, 10.7%.

    Fewer defects than average

  • Brakes· counts in the score

    Defects in 13.8% of inspections; in cars of its age, 14.1%.

    Average

  • Steering· counts in the score

    Defects in 4% of inspections; in cars of its age, 4.8%.

    Average

  • Headlights and lights· counts in the score

    Defects in 25.2% of inspections; in cars of its age, 29.2%.

    Average

  • Rust and bodywork· counts in the score

    Defects in 2.9% of inspections; in cars of its age, 2.1%.

    Average

  • Exhaust and emissions

    Defects in 9.8% of inspections; in cars of its age, 6.8%.

    More defects than average

  • Fluid leaks

    Defects in 10.8% of inspections; in cars of its age, 15%.

    Fewer defects than average

  • Glass, wipers and mirrors

    Defects in 5.2% of inspections; in cars of its age, 6.6%.

    Average

  • Tyres and wheels· depends mostly on maintenance

    Defects in 18.3% of inspections; in cars of its age, 17.2%.

    Average

The inspection measures wear and the defects visible at a periodic check, not engine or electronics failures. Source: RDW Open Data (public domain). How we calculate it · opendata.rdw.nl

Checklist for buying a used Rover 45

Check the advert or the paperwork to see which engine the car has and go through its section. Each point comes from a documented fault; you can tick them off as you inspect.

If it has the Rover K-Series (1999–2005)

Head gasket failure

High severity

Sunken cylinder liners and warped head after overheating

High severity

Coolant leaks: expansion tank cap, rear block rail and hoses

Medium severity

Wear parts for the Rover 45

Brakes, wiper blades, pollen filter and battery, searched for this model. The exact part number depends on the engine and year: confirm it with the registration plate or VIN.

Affiliate links: if you buy from these shops, MotorFiable may receive a commission at no cost to you. Check compatibility against the registration plate or VIN before ordering. More information

Buying a Rover 45?

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Own a Rover 45? Tell us what faults you have had, at what mileage and how much you paid. Report your fault.

Frequently asked questions

Is the Rover 45 reliable?

The only engine of the Rover 45 that we have documented, the Rover K-Series, has high or critical severity faults in the versions it is fitted to. Our verdict for the versions it is fitted to: «With caution». Outside the engine, the Rover 45 suffers mainly from corrosion and wear on cars over 20 years old: rusted suspension mounts and underbody, torn driveshaft gaiters and small plastic and electrical parts. There are no documented recalls and all the sources are British.

What problems does the Rover 45 have apart from the engine?

Outside the engine, the Rover 45 suffers mainly from corrosion and wear on cars over 20 years old: rusted suspension mounts and underbody, torn driveshaft gaiters and small plastic and electrical parts. There are no documented recalls and all the sources are British. The most important documented faults are: corrosion of suspension mounts and underbody (bodywork and interior, medium severity), driveshaft gaiters torn or loose (gearbox and clutch, low severity), cracked outer door handles (bodywork and interior, low severity) and heater blower resistor failure (climate control, low severity).[4][5]

What faults does the Rover 45 have?

The most important by severity and frequency, on the engines we have documented, are: head gasket failure (Rover K-Series, high severity), sunken cylinder liners and warped head after overheating (Rover K-Series, high severity) and coolant leaks: expansion tank cap, rear block rail and hoses (Rover K-Series, medium severity).

Sources

Every fact on this page links to its source. If you find an error, let us know.

  1. Guía de compra del MG TF de segunda manoDiariomotor · Motoring press · published 7 November 2023 · consulted 8 October 2026 · in Spanish
  2. Choosing the correct K Series Head Gasket KitDMGRS · Technical documentation · consulted 8 October 2026
  3. MG ZR ZS ZT & Modern Engine & FuelMGOC Spares · Technical documentation · consulted 8 October 2026
  4. Rover 45 hatchback (1999-2005) review and buying guideClassic Car Reviews · Motoring press · published 19 September 2026 · consulted 29 October 2026
  5. Rover 45 Common Problems, Faults & Repair CostsCarCostCheck (datos DVSA/MOT) · Reliability study · consulted 29 October 2026
  6. Rover 45Wikipedia (en) · Other source · consulted 8 October 2026
  7. MG ZR (used car review)Auto Express · Motoring press · published 28 September 2004 · consulted 8 October 2026
  8. Cooling and heating (K-Series: ZR, ZS, ZT, MGF, TF)MGOC Spares · Technical documentation · consulted 8 October 2026
  9. MGF & TF Headgasket Repair KitsMGOC Spares · Technical documentation · consulted 8 October 2026