The X-ray emission from the supernova remnant DEM L 71 is measured and analysed using the high-resolution cameras and spectrometers on board XMM-Newton .
The spectrum from the outer shell is reproduced very well by two plasma components of kT _ { e } = 0.3 and 0.8 keV .
The abundance value from this shell is consistent with the average LMC values .
More extreme temperature variations are possibly indicated by spatial variations in the O vii 
forbidden/resonance line ratio , which could imply that in some regions the plasma is cooling dramatically and recombining .
However , an alternative and equally interesting possibility is that the variation in forbidden/resonance ratios is due to resonant scattering , which would reduce resonance line emission along lines of sight with a high O vii column density .
The inner region is hotter ( kT _ { e } = 1.1 keV ) and shows enhanced Fe and Si abundances .
We estimate the Fe and Si ejecta mass to be 0.7–1.1 M _ { \sun } and 0.1–0.15 M _ { \sun } , respectively .
The morphology , mass estimates and abundances strongly suggest that DEM L 71 is the result of a type Ia explosion , as indicated by previous measurements .