Get a used BMW i3 inspected: on-site used-car inspection, from €289

checkdenwagen.de is an independent provider of on-site used-car inspections operating throughout Germany, based in Berlin with a network of inspectors across the country. With the BMW i3 used-car inspection, the first central question is which of the three battery expansion stages is installed and what condition that battery is in today. BMW produced the i3 from 2013 to 2022 and enlarged the battery in three steps: 60 Ah (approx. 22 kWh net, 2013-2016), 94 Ah (approx. 33 kWh, 2016-2018) and 120 Ah (approx. 42 kWh, from 2018). The older 60-Ah generation already offers little range when new — and measurably loses capacity with increasing age and charge cycles. The State of Health (SoH) describes how much capacity the high-voltage battery still has compared to its as-new condition. An SoH of 80 percent means that only 80 percent of the original range is still available — permanently and irreversibly. We cannot promise a blanket manufacturer certification of the battery, but via the diagnostic interface and specialised tools our inspector delivers a substantial assessment of the SoH based on actually read-out charging data. Alongside this we inspect the CFRP body for improper repairs, test the counter-opening doors for correct function, assess the petrol-engine condition on the Range Extender model and check the high-voltage heater as well as the 12V supply battery. Our inspector examines your desired BMW i3 on-site for about 1.5 hours — you receive the report within 24 hours. For a comprehensive overview of EV-specific inspection points, we also recommend our page on the electric-car check.

With the i3, BMW didn't introduce classic model generations but instead enlarged the battery step by step, while the body and drivetrain concept remained largely the same. For a used purchase, the battery generation is therefore the most important decision point. The first expansion stage with 60 Ah (approx. 22 kWh net capacity) was fitted from 2013 to 2016. When new, realistic ranges of 130 to 160 km were possible — depending on driving profile, heater use and temperature. Today, after ten or more years of battery ageing and charge cycles, vehicles of this stage can in unfavourable cases shrink to well under 120 km. The 60-Ah vehicles are the cheapest on the used market — and those with the highest residual risk regarding battery condition. The second expansion stage with 94 Ah (approx. 33 kWh) arrived in 2016 and remained until 2018. The range rose to a real-world 200 to 250 km — significantly more practical. Vehicles of this generation are now seven to nine years old; an SoH check remains indispensable, but generally paints a less dramatic picture than on 60-Ah vehicles. The third and final expansion stage with 120 Ah (approx. 42 kWh) was fitted from 2018 and remained until the end of production in 2022. WLTP ranges of over 300 km were quoted; in reality 220 to 260 km is a realistic corridor. These vehicles are younger, more expensive and recommended if the i3 is to be used as a genuine everyday car outside the city too. Regardless of the expansion stage, the rule is: the actual SoH at the time of purchase can only be reliably assessed through diagnostic readouts. Figures from listings or from the seller are no substantial basis for a buying decision.

The BMW i3 is driven by a permanently excited synchronous electric motor producing 125 kW (170 hp), acting on the rear axle. The drivetrain concept is identical across all model years and battery generations — the i3's technical evolution happened almost entirely through the battery. The base configuration is the BMW i3 without Range Extender: a pure battery-electric vehicle (BEV), economical to run and mechanically simple. The optional configuration is the BMW i3 REx: additionally a small two-cylinder petrol engine (25 kW) as a range extender, fed by an approx. 9-litre tank, which works as a generator when the battery is low. The REx engine never drives the vehicle directly — it only supplies the electric motor with power. For a used purchase this means: on a pure i3, the drivetrain and high-voltage system are the only complex systems. On the i3 REx, the combustion engine with its specific tank-venting problem is added — a system that can coke up and gum up if rarely operated. An i3 REx that was driven mainly on electric power, and on which the petrol engine was never called upon, is an i3 REx with a potentially neglected combustion unit. Recommendation for buying: anyone prioritising range and everyday usability should look at the 120-Ah generation (from 2018), ideally without REx (less complexity). Anyone who only drives in the city and is looking for a cheap i3 offer should have the SoH checked especially carefully on 94-Ah or 60-Ah vehicles before buying.

The BMW i3 used market is heavily segmented by battery generation, model year and REx equipment. Prices range from very cheap early 60-Ah vehicles from 2013 to 2016 up to significantly higher-priced 120-Ah models from the final production years. We don't quote blanket euro figures — market prices fluctuate depending on region, equipment, mileage and — crucially — the actual battery condition. What determines the price: the single most important factor is the battery's SoH. A 60-Ah i3 with a very good SoH can be worth more than a same-age 60-Ah i3 with a poor SoH, even if both have similar mileage. The body (CFRP integrity) and the REx equipment (added value or added risk depending on operating history) also feed into the fair price. An i3 with a demonstrably good SoH, an intact CFRP body and a well-maintained REx unit is worth its premium over an uninspected offer. An independent check gives you the factual basis to correctly assess the price offered against the market — and shows you whether the supposed bargain has to be paid for with a poor battery.