1.4 and 1.6 8v vs 1.2 16v: which engine is more reliable?

According to our risk index, the 1.2 16v carries less risk than the 1.4 and 1.6 8v: 36/100 versus 48/100 (both moderate risk). The 1.4 and 1.6 8v has 3 documented serious faults, the main one being «LPG tank corrosion»; the 1.2 16v has 1 documented serious fault, the main one being «Damaged head gasket and coolant loss».

Risk index

1.4 and 1.6 8v

Moderate risk · 3 serious faults

Risk index

1.2 16v

Moderate risk · 1 serious fault

Lower risk

The index (0–100) weights the severity and frequency of the three most serious documented faults. How it is calculated

Reviewed on 27 September 202614 sources How we work

Is the 1.4 and 1.6 8v reliable?

The K7J (1.4) and K7M (1.6) are the original 8-valve, single-camshaft versions of Renault's «K» family: simple naturally aspirated engines that are, on the whole, reliable. None of the sources consulted documents oil consumption or faults that destroy the block. The most frequently cited weak points are the crankshaft sensor, the head gasket and the ignition coils; on Dacia's LPG versions, corrosion of the gas tank is added to the list.^[1][2][3]

See the 5 of the 1.4 and 1.6 8v faults

Is the 1.2 16v reliable?

The 1.2 16v (D4F) and its 8-valve predecessor, the D7F, are simple naturally aspirated engines, used for over two decades as the entry-level option in Renault and Dacia cars, with a reputation for reliability: the reliability pages consulted document no catastrophic failures and no oil consumption. The most-cited problems are ignition coils and sensors and, on higher-mileage cars, the head gasket.^[1][4][5][6]

See the 5 of the 1.2 16v faults

Side-by-side comparison

Comparison of 1.4 and 1.6 8v and 1.2 16v
Item	1.4 and 1.6 8v	1.2 16v
Technical data
Type	Engine	Engine
Fuel	Petrol	Petrol
Displacement	—	1,149 cm³
Timing	Timing belt (dry)	Timing belt (dry)
Power	75–90 hp	60–76 hp
Production	since 1995^[7][8][9]	2001–2020^{[9][10][11][12]}
Reliability
Risk index (what is it?)	48Moderate risk	36Moderate risk
Documented faults	5	5
Of high or critical severity	3	1
Worst severity	High severity	High severity
Main faults	High severity: LPG tank corrosion High severity: Timing belt breakage or failure High severity: Head gasket (and, in some cases, cylinder head)	High severity: Damaged head gasket and coolant loss Medium severity: Ignition coil failure (misfires, engine warning light) Medium severity: Probe and sensor faults (crankshaft position, throttle body)
Most expensive documented repair	No reliable data	No reliable data
Which versions to buy
BuyRecommended versions	None	1.2 16v 75/76 (D4F, 2001-2020)^{[1][2][3][4][5][6][13][14]} 1.2 16v 60 (D4F 708, Twingo I, 2004-2007)^[11]
With cautionVersions to be cautious about	1.4 8V 75 hp (K7J, 1995-2012)^{[1][2][3][13]} 1.6 8V 90 hp (K7M, 1995-2012)^[1][2] 1.4 8V 75 hp LPG (K7J 714, Dacia, 2008-2012)^[3]	None
AvoidVersions to avoid	None	None

Severity of each fault: green, low; amber, medium; red, high; dark red, critical. How we rate them

Cars that each one is fitted to

1.4 and 1.6 8v

1.2 16v

See the 11 models with the 1.2 16v

Other comparisons

With the 1.4 and 1.6 8v

With the 1.2 16v

Compare other engines

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Sources

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

Fiabilité et pannes de la Renault Clio 2Fiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
Fiabilité et pannes du Dacia Logan 1Fiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
Fiabilité et pannes du Dacia Sandero 1Fiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
Fiabilité et pannes de la Renault Clio 3Fiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
Fiabilité et pannes du Dacia Sandero 2Fiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
Maxi-fiche fiabilité : la Renault Twingo 2Caradisiac · Motoring press · consulted 27 September 2026 · in French
Renault K-Type engineWikipedia (inglés) · Other source · consulted 27 September 2026
Moteur K RenaultWikipedia (francés) · Other source · consulted 27 September 2026 · in French
Anexo:Motores de RenaultWikipedia (español) · Other source · consulted 27 September 2026 · in Spanish
Moteur D RenaultWikipédia (francés) · Other source · consulted 27 September 2026 · in French
Renault TwingoWikipedia (alemán) · Other source · consulted 27 September 2026 · in German
Renault Clio IIWikipedia (alemán) · Other source · consulted 27 September 2026 · in German
Fiabilité et pannes de la Renault KangooFiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
Fiabilité et pannes du Dacia Logan 2Fiches-auto.fr · Motoring press · consulted 27 September 2026 · in French