Mercedes-Benz A Class BlueEfficiency.
What to Check Before Buying.

The Mercedes-Benz A Class BlueEfficiency is ideal for cost-conscious buyers seeking premium badge appeal with improved fuel economy and lower running costs. This variant features Mercedes' eco-focused technology including stop-start systems and low rolling resistance tyres, making it particularly suitable for urban commuters and company car drivers mindful of benefit-in-kind tax. The BlueEfficiency models deliver respectable fuel economy, though early versions can feel underpowered compared to standard variants due to economy-focused engine mapping. When buying used, check the stop-start system functions correctly as battery replacements can be expensive. Inspect service history carefully to confirm oil changes followed Mercedes' flexible servicing regime, as extended intervals sometimes caused engine wear issues in higher-mileage examples. Examine the dual-clutch automatic gearbox (if fitted) for smooth operation during test drives, particularly when pulling away from standstill. Verify the tyre pressure monitoring system works properly and check for uneven tyre wear which may indicate suspension problems. A full Mercedes service history adds significant value and provides reassurance about the specialist maintenance these models require.

The average used car has 3+ known model faults the seller won't mention.