The first-generation BMW 1 Series (E87 code for the 5-door version, E81 for the 3-door) marked the Bavarian brand's entry into the premium compact segment. Unique at the time, it was the only car in its class to offer a rear-wheel drive architecture and a longitudinal engine, providing ideal weight distribution (50/50) and unparalleled driving pleasure. The facelift (LCI - Life Cycle Impulse) occurred in March 2007, bringing aesthetic updates, an improved interior finish, and the introduction of 'EfficientDynamics' engines (including the notoriously famous N47 diesel and N43 direct-injection petrol engines). While the chassis is exceptional, the mechanical reliability of this generation is very mixed, particularly for the diesel engines which accounted for the majority of sales in Europe.
The BMW 1 Series E87 is an enthusiast's car, even in its more common versions. Its rear-wheel drive architecture makes it a unique offering in the used car market. However, purchasing a diesel version requires extreme caution. Phase 1 (M47) models are robust provided the intake swirl flaps are removed. Phase 2 (N47) models, although more powerful and economical, are plagued by the hidden defect of the timing chain. Without a recent timing chain replacement invoice from BMW, avoid the 116d, 118d (143hp), 120d (177hp), and 123d. The sensible choice is a Phase 1 petrol (118i/120i) or, for purists, the magnificent 130i which offers exemplary reliability and first-class mechanical pleasure.
| Oil change | £70 – 130 |
| Timing chain | £1 300 – 2 600 |
| Clutch | £800 – 1 500 |
| Complete brakes | £250 – 500 |
| Estimated annual budget | £600 – 1 200 |
Indicative estimates (independent garage, UK market). Prices vary by region and year.