B299, compare every engine

All 3 variants in this chassis on one screen. Identical body, identical electronics, identical suspension. Everything below is a consequence of which engine is in the bay.

Full comparison

VariantYearsPowerTorqueFuelTransmissionsEconomyRiskIssuesWorst single repairBandGood buyVerdict
1.25 Duratec STJA2008–201782 PS114 Nmpetrol5-sp manual5.5–6.5R11€2,200€3,200€8,700€4,200Strong buy
1.6 TDCi T1DA2008–201795 PS205 Nmdiesel5-sp manual3.8–4.8R34€2,200€3,600€9,800€4,700Buy with conditions
1.0 EcoBoost M1DA2012–2017100 PS170 Nmpetrol5-sp manual5–6.5R43€4,000€4,900€12,000€6,400Buy with conditions

Issue overlap by engine. The row that decides it

IssueCostSTJAT1DAM1DA
Coolant loss and cylinder head cracking (early 1.0)walk away€1,500€4,000··
DPF clogging and forced regeneration€250€1,800··
Turbo oil feed blockage€300€1,500··
EGR cooler leak€400€1,000··
Carbon buildup on intake valves€400€700··

Only engine-differentiating issues are listed. 1 further issues apply to every engine in this chassis. Cooling, electrics, suspension and the gearbox, and are on the chassis page.

Cross-chassis comparison

To compare against a different chassis: an E92 335i against an E90 330d, say, use the general comparison tool, which takes up to four variants from anywhere in the database and encodes them in the URL so the comparison can be shared.